October 24, 2017
Ep. #6, Light Fields & The Future Of Imaging
In the latest episode of Demuxed, Matt, Steve and Phil are joined by Ryan Damm. Ryan founded Visby to take a light field approach to VR. Rya...
In episode 28 of The Secure Developer, Guy is joined by Jason Chan of Netflix to discuss simplifying the security process for software developers, as well as some of the open source projects Netflix has shared with the community.
About the Guests
Guy Podjarny: Welcome back to The Secure Developer, everybody. Today I've got Jason Chan from Netflix with us. Thanks for coming on the show, Jason.
Jason Chan: Thanks for having me.
Guy: Jason, there's a whole million things I want to ask you and dig into security at Netflix. But before I go too deep, would you just give us a quick rundown of what's your background, what's your role today, and maybe what's the journey that got you there?
Jason: Sure. I've been in security for about 20 years or so. I started doing defense work for the space and naval warfare center, moved from that really into boutique consulting for about the first half of my career.
I would say for the last 10 years or so I've been really managing security programs. I led the security program at VMware, and now I've been at Netflix for about eight years.
Guy: OK. So at VMware you weren't on the security product side, you were on the keeping VMware secure side.
Jason: Exactly. We were in the IT organizations, so the information security team handled corporate enterprise stuff.
Guy: Got it. Eight years is a long time at Netflix, and the organization has changed somewhat. In those eight years, what were your scopes of responsibility roughly?
Jason: Sure. It has changed quite a bit. Business wise you think about it moving from shipping DVDs, to being a streaming provider, to now really being a full fledged entertainment company creating their own content.
I started out relatively early on when Netflix was pushing into the public cloud and AWS, really as an individual contributor to explore the space. From there, as it turns out, you need more than one person to protect a cloud.
Jason: I just eventually built the team.
We started as a product security function, really working within the
engineering team to try to effect change there.
Then over the years, probably about 60% organic growth and about 40% reorganizing of other teams into my org, we've grown to an enterprise wide security team.
Guy: Got it. How does this fit in the org? Like, is it still a part of the engineering organization?
Jason: Our security team is within the product organization, which I guess you could think of as the engineering organization, and I report into the chief product officer.
Guy: OK. So it's a peer organization to the engineering team?
Jason: Yeah. Our chief product officer basically runs engineering. We don't have a CTO or a CIO, so we're-- Think of my peers, the other VPs, are other engineering VPs.
Guy: Got it.
I think when you look at Netflix in general, Netflix has been
pioneering a lot of wander practices
around micro services, Chaos, and engineering, and a whole
bunch of others.
Specifically there was a lot of
statements, I've heard you speak in general in statements
from Netflix around modern philosophies.
Very intentional approaches to software engineering,
So I'd love to dig in a little bit around this topic
of, how do you run security in this fast paced
environment and dealing with developers?
What would you say in high level, when you look to engage or work with the product team, with engineering teams, with your peers, and help instill security--What are the core philosophies core principles that guide you in making decisions in your actions?
Jason: I would say to start with, when you think about some of the things that Netflix is
well-known for, things like Chaos engineering.
A lot of that is--our intent is really the same
as it always has been, whether you're talking about keeping systems available
The intent is always the same, but how we apply it is fundamentally different. It has to be different because of running in the cloud, and running large scale distributed engineering teams, so that's the foundation. That we're still trying to achieve the same objectives.
But we realize organizationally and culturally we need to approach it a different way. Probably the leading principle or philosophy or whatever you might call it when we're working with our engineering teams is just this idea of, "We want to think about guardrails instead of gates."
If you think about how traditional security practices have been, you have this idea of a gate where maybe a project or an application you get to a certain phase and then you need to go talk to security--
Guy: Stop for an audit.
Jason: Yeah, and you might have to get a pen test.
We really wanted to turn that on its head and really think about this idea of guardrails, where we can keep things moving fast but also keep things staying safe.
We try to infuse that general principle into anything we do, whether it's a tool we're going to build to support developers, whether it's any kind of process or mechanism or workflow, something like that. We're really trying to minimize the situations where somebody has to come ask us to do something.
Guy: This sounds much more aligned with moving quickly. I don't know if I'm phrasing it correctly, but I think that fixed values are like freedom and accountability or something of that nature. Freedom and--?
Jason: It's freedom and responsibility.
Guy: How does that how does that align? You work with the dev teams, how much do you give them freedom? You gave them the guardrails, how much do you give them that freedom and how much do you hold them responsible?
Jason: It's definitely, there's two sides of that coin.
I would say a general management philosophy for
Netflix, and you can even-- I know our CEO has talked about it
publicly, is you really want to distribute decision making as
much as you can.
Me, as leading the security team, I want to be making a few decisions as
possible, and the best way to facilitate that is to make
sure that people have context about what's important to the
company, what's important to the team.
idea being if you have all the information you need to make good
decisions, that given maximum freedom you're likely to
come within a range of acceptability for decision
Then the responsibility aspect of it is,
you are free to make your own choices you're free to pursue your own paths,
sometimes they'll be the wrong choices.
The responsibility element is you have to be accountable for
So security wise and I would say generally from an engineering
perspective, we want people to be able to make their own
choices, but there's a little bit of-- I don't know if I'd
call it informal peer pressure that keeps
Where you generally want to align with other teams, if centralized teams are providing a particular service you generally want to consume that, versus building your own. Just because those are the things that helps you be a good citizen of the overall engineering ecosystem.
Guy: Yeah. To what level does that require security expertise? What's the threshold there?
Jason: Generally what we're trying to do, and maybe we have a slightly different approach to security expertise for developers than some organizations, but my general philosophy is that we're not trying to make software developers security experts.
We realize they have a lot of other responsibilities, they have to build features and products, they have to worry about performance reliability. We want to make participating in security as easy as possible.
A lot of security tasks are quite difficult, they require
expertise whether it's cryptography or things like that. We
don't really want developers who are really trying to focus on some
other element whether it's UI or personalization to be having
to worry about those decisions.
So if we can solve those problems elegantly and performantly and efficiently for them, then what we'd like them to do is opt into our systems versus trying to solve on their own.
Guy: Yeah. It's a combination of not reinventing the wheel. So, you're working with those systems and things of use, and maybe sandbox environments? Is that the way to think about it, it's like you play within the sandbox then you're fine?
Jason: Yeah. That's a good way to talk
about compartmentalization or segmentation, and
one of the examples is--
An analogy we'll use around self-service is like when you go to a grocery store and you want to do self-service checkout it's normally fine, but if you have drug-- Or, not drugs, but if you have alcohol or cigarettes you're going to have to talk to a person.
Guy: Probably drugs as well. It's probably OK--
Jason: Who knows what kind of drugs. Maybe Sudafed?
So, the idea is that a lot of things you can do and you
can interact with, and it's not necessarily going to cause that much of a security
But we really want to identify that minimum set of things that we feel would be pretty impactful, if there was some kind of damage or some kind of error, and figure out the right way to sandbox those, the right way to allow the developer to interface with those systems in a safer way.
Guy: Got it.
Let's maybe drill down a sec, we talk
philosophy, probably the best way is to just talk about specific practices that
So, let's chat about a bunch of practices that you have here. Can you give us some examples of some tools that you use or some security processes that you apply to them?
Jason: Sure. A good example that follows on that
idea of making security safe to interact with
is Lemur, which is a system that we built to allow
developers to interface with PKI, and with SSL.
We all know historically things like open SSL is just--
It's a difficult thing to use.
Certificates are not straightforward to request or
configure, but they're important.
So really, after I think it was in 2014, after Heartbleed happened
which was the big SSL issue, we built Lemur
as a way we knew we wanted to make encrypted
communications and SSL more pervasive throughout the environment.
But we didn't want to rely on manual management, or those
certificates. So Lemur is a way for all of our developers in a
really simple and easy way to request certificates, make their
certificates get automatically renewed, they're monitored.
I'm sure we've all had experience in those cases where a certificate expires and all of a sudden something stops working. So we wanted to just make all those problems generally go away, just fade away, again try to let the developers focus on what they're actually getting paid for at Netflix and let us worry about the security stuff.
Guy: This is Lemur, that's the name of the tool that's there?
That's an example of something that's entirely out of bounds.
That system, there should really be, there is no
freedom for somebody to use their own implementation of open SSL.
There needs to be some spectacular reason for SSL-- There needs to be some spectacular reason for them to do so.
Jason: Yeah. Lemur, yes it's really the standard, and it's there.
We open sourced that a few years ago.
But what we hope to do is if we build a tool that's
sufficiently capable and simple, then you really have no motivation to
go outside of that bounds.
We call that concept "A paved road." You could certainly bushwhack and make your way through the woods. But if you have this nice smooth paved road that gets you to your destination, you're likely to opt in there.
Now with freedom of responsibility we do preserve the
individual decision making to go off that, but then they become
responsible for that, so you could think in Lemur or
SSL certificate prospective.
A developer, if they didn't want to use Lemur, they're going to have to figure out which certificate authority to use and how to provision those to make sure they don't expire. They're going to be on the hook for all that, and there's really no reason to do that.
Guy: Yeah. There needs to be something wrong.
That's the-- We're starting from the point of tools that are
not really offering terribly much choice to the developer.
What's an example of a tool that's maybe closer to the user side
of the fence?
Like you mentioned cloud permissions, you have some capability there, and another tool that you've open sourced?
Jason: We built a system called Repokid, and
Repokid works on Amazon Web Services as a
mechanism to evaluate the
permissions that an application is using
and if they have been provisioned with more permissions than
they're using to automatically whittle those away.
The philosophy there is we don't really
want developers thinking about "What specific permissions do I
need in AWS?"
We want them to be able to use what they need. So if they need a queuing service or storage, they should just be able to use
that without worrying how all the mechanics work from a policy
So Repokid just works in the background will automatically manage and monitor those permissions, takeaway ones that aren't used, it will of course notify. But the goal is to have developers really have no notion of how permissions work in AWS and everything will just work.
We'll talk a lot internally sometimes about this idea of cognitive load, and how much does a developer need to keep in their brain to be able to get ideas from their head into production? We want to minimize that, we want to minimize the impact that security has on that.
We think of Repokid and similar tools as a way of just taking entire classes of problems that used to be-- Or, they have historically been problematic, and just really making them disappear into the background.
Guy: Interesting. So that's it.
I think the SSL statement wasn't controversial at
all, in the sense that very few developers would
have any aspirations to re implement their
SSL, or even certificate assignment.
But specifically when it comes to permissions or to getting
permissions, that's indeed typically-- Or, more
commonly you see this as the realm of the application definition.
You're saying in this case, it is you're defining it.
You're getting it down to that least privilege by way of observation?
Jason: Yeah, you might think of it as "Automated least privilege," where what we
do out of the gate is we'll give you what we call the base
set of permissions and that set of permissions has been
created over observing many hundreds and thousands of
applications operate in AWS over a number of years.
We generally have a sense of how most applications
operate. So if you were at Netflix and you were an
engineer and you created a new application, you would get those set of
permissions and the chances are what you need to do you
already have permissions to do.
You may try to do something that you don't have permission to do, and we have a pretty
simple workflows for you to gain access to those.
But then what we do is we'll observe your application over
time and if you haven't given permissions
that you don't actually need we'll just kind of shrink those away.
We have a standard change notification process so we'll let you know, "Your application is given these permissions that it's not using, we're going to take them away. You have any questions?" "Here's a documentation, come talk to us either in person or in Slack channel." It makes people--
Guy: The default is to take it away, like there's no-- They can appeal, they get some head notice for it and they can appeal or prevent it from happening. But if they've done nothing, the permission would go away.
Jason: Yeah. It would go away, and there's really no basis for appeal.
That's one of the nice things is that if permission is not being used then
there's no real justification to have it--
Now, you may run into
sometimes, a developer will say "I only use that maybe
once a month or once a quarter," something like that.
We certainly could provide that, but generally it's been
I was checking our metrics a few months back
and we have a really low rollback rate.
Most of the decisions we make in an automated way
have no impact and they just get it, it fades into the background.
That's one of the things that we're trying to do.
It's not that we don't like to work with our developers, but when we think about scale what we're trying to do is figure out the investments that we can make that potentially takes out entire classes of interactions that you perhaps used to have to have but now they can just go away through automation.
Guy: Let's take a step then into the code.
We've talked about SSL, that's like arguably a
little bit more infrastructure elements of it, and Cloud
Access is as well.
What about the code itself, within
the application code itself?
You've got maybe Docker containers, you've got vulnerable dependencies, you've got vulnerabilities in the code. What are the practices? How do you tackle those? Getting closer to explicit decision making from the developer.
Jason: With specific code level vulnerabilities, we have
a number of mechanisms that we would plug into. Whether
they're scanners or other systems that could give us some
signal that a vulnerability exists somewhere.
What we try to do, because as you know---
There's never really a shortage of security tools that will tell you there's something wrong. What the problem is, is like "OK. How do you fix it?"
what we try to do is match up the vulnerabilities that we see
really commonly, maybe they surface through a bug bounty or
through a penetration test or something like that.
Those more difficult problems, and same thing where
we're going to try to solve those for the developers so they don't need to action
on their own.
A good example would be something like Secrets Management
, where Secrets Management feels like
"That should be a simple and solved problem."
But of course at scale when you have thousands of developers and thousands of
systems, it's really quite difficult.
So, we built that system. We build the system that handles PKI and things like that to give systems identity, that then become the foundation for use cases like Secrets Management, and being able to store encrypted secrets in your code repository versus leaving it in plain text.
Guy: But still sort of drilled down into this notion
of the vulnerabilities in code.
So, you build scanners? You
provide those scanners to developers.
I guess two questions, one is, do they have to use it? Maybe this comes back to conformity. Second is, who handles the results of it? Code scanners are notorious for their false positives. How do you engage there?
Jason: They are.
I mean, we definitely plug into a variety of scanners and other
tools that will help you surface vulnerabilities.
One of the things that we're investing in is a system that, we call internally, we call it "Security brain"which is intended as a way of aggregating vulnerabilities for developers. So that you're not-- The old case we used to talk about was you'd run a scan and that you'd give like a 300 page PDF report to the developer, and--
Guy: Everybody hides under the desk.
Jason: Yeah. It hasn't been reviewed. What
we try to do with Security Brain is surface the most important
things that we really want the developer to fix, and make it
really clear what those issues are and what the fixes are.
And it may link to things like Cheers that we've added.
We're trying to think about, "What is the developers interface
to security issues?"
We want to minimize the number of places they have to go and how they
would actually interact with that, so Security Brain for us
I don't know if it would be like, not necessarily a
normalization layer, but it's one place that we could
surface findings from an arbitrary number of tools
into that system.
So that the developer has, you could think of it like an
If you own an application
you could go there when you log in and you'll see all the applications you own
with the various issues that we found with each of those.
You can be relatively certain that we're not going to come
pester you about things that are not surfaced in that.
Of course there could be critical things that pop up that we would maybe engage--
Guy: That's more than the response bit.
Jason: But you can think of that as the basis for your workflow, and you won't need to worry about logging into 15 other systems to find problems.
Guy: OK. Interesting. So that's all that communication. How do you handle containers again? Netflix is known for early adopters, micro services, a lot of those components. How do you handle security of containers and application dependencies? Those things are between infrastructure and code.
Jason: That's a good question.
That's a good emerging area that
most teams are trying to figure out how to tackle.
Because one of the things as you move to the
cloud, or as you move to say immutable infrastructure,
or this idea of having golden images or base
AMIs. Or, whatever you might call it in your organization.
the line between infrastructure and the network, and
security and applications, just go away.
I would say we still have the same philosophy where we're trying to get
leverage by building security into the platform, versus chasing
every single potential variation that folks might have.
We have a team, and you may be aware of, we have our container runtime called Titus. We work with them pretty closely from a relationship basis to build security and the security features we need into the container runtime system. We work with our team that handles the operating system on our base images pretty closely.
But what we're trying to do, similarly, we're not necessarily trying to make them security experts. What we're trying to do is work with them closely in close partnership, because we know there's high leverage by investing in those things, so that they can build security into what they're providing the rest of the ecosystem.
Guy: Yeah. Very cool. Thanks
for the tour a little bit about different problems and clearly there
are even more threats for it, but I love
how indeed the philosophy holds within
How do you handle responses?
All of those up until now have been, a lot of them have
been, there are analogies to quality that you
Maybe one of the slightly different is,
indeed, incident response.
A new vulnerability has been disclosed, it affects one of your dependencies. Do you get that notice? Does the dev team get the notice? Who gets pulled in?
Jason: If we had for example, like a product security--
Guy: Not a breach, a breach is--
Jason: Maybe the stress vulnerability?
Guy: Exactly, like a new stress vulnerability.
Jason: We have a centralized response team, and
my goal with that team is to really to have them to be able to
support different types of incidents.
It could be data issues, it could be
severe product security issues, it could be a corporate issue.
It really doesn't matter, what we want them to bring to the table is things like crisis
management skills and communication skills, and technical
remediation and leading that.
For a product security incident, for example, you had a popular application server that had a serious security vulnerability. Generally there our app sec team would take lead on that in working in conjunction with our incident response team.
Just because they're going to have a bit
more context about who may be using that system,
and they're more familiar with the system to be able to get that data pretty quickly.
They would be the technical lead on that incident.
They would be doing a lot of technical execution of the investigation.
But what we attempt to do is have pretty good context about the
environment, if you think of it from an inventory perspective, so that you could
answer relatively quickly "Who is using this
particular library or service, and who do we need to contact?"
We also want to be able to add qualifiers to that right. If you're using it and you're edge facing, we're going to want to engage with you more quickly than if you're using it on an internal system that's not facing the internet.
Guy: OK. It sounds like in those context the application security team or the product
security is still a little bit fronting for
the development team.
Trying to buffer, comes back to trying to keep the
nose to a minimum for the development team and you'll push them.
The app sec team might have context about, whatever if it's a component that is vulnerable, "Should I worry or not?"
Jason: Yes. We'll generally have the app sec team make those decisions, and really what we found is one of the great things about the Netflix culture is that people care and they want to do the right thing. If they can help with a security issue, they're more than willing.
Guy: They're going to jump on it.
I've never had an issue in eight years of any team not being responsive or not taking responsibility for issues. I give them a lot of credit, they tend to go above and beyond when there's an issue.
Guy: But it is my understanding that it's still handled a little bit differently than an outage. It does imply that the person getting paged when there is an outage versus when there's a vulnerability in the same application, it's not the same person.
Jason: It would generally be the same person.
Guy: So it's still the same person.
Jason: Yeah. So say you if you had an application team and they had an on call, we would just-- If we felt it was urgent enough where we need to trigger the on call, it would be the same person responding whether it was an outage or a security issue.
Jason: They may then engage other folks, but they would be the first responder.
Guy: Got it. Then this would be the central incident response that would have paged them, because they said "This is a sufficiently-- They might not have application context, but they know that the vulnerability that's been disclosed is sufficiently severe to care.
Jason: Yeah. That's another thing that we tried to do, when we talk about
cognitive load and how much do we want people to have to worry about,
is we really designed our incident response processes
after our SRE team.
So they had already had years of experience managing
outages and working with engineers and bringing in the right people at the right
To me it would be ridiculous to try to build a capability that was markedly different from that, so we really tried to borrow from that so that when people are responding to a security incident it feels very similar to an outage. That things will work the same way, we'll do the same type of post incident reviews, the same type of reporting.
Guy: That makes perfect sense on it.
Maybe on the flip side of that we talked about problems happening.
Do you have anything that you do that is more about celebrating successes?
If a development team, like as the security team, if some
developer went above and beyond or did something
awesome for security, do you have some
elements of that?
Maybe a similar question is, is there any notion of a security champions program, or things like that? How do you go the other way around identifying leaders and celebrating them within dev?
Jason: We don't have a formal champions program, but I would
say we have a pretty strong and robust informal program
where just the nature of software engineering you have a lot
of folks that have worked on security
products, and they know.
They tend to be good informal
champions for us.
We do have a program, like anybody else we probably don't celebrate enough, but
we have a program that we call Security All Stars.
Maybe it's a little bit corny or cheesy, but we will recognize
people if they go above and beyond.
We give a little bit of swag. Nothing big, I think it's always nice to be recognized by your peers, and I think it's generally appreciated.
Guy: I know I promised I'm not going to talk about tools, but then I realized that we didn't talk about Security Monkey, and it's not quite the elephant in the room but it's-- Can you tell us a little bit about the Simian Army from Netflix, infamous or famous. I don't know.
Guy: What is Security Monkey and what does it do?
Jason: Yeah. So Security Monkey, I believe it was the
first tool that my team open sourced, I think in
2014-ish or so.
The Simian Army, at least the way I always thought about it, and
that goes with things like Janitor Monkey and Chaos Monkey and
Chaos Kong, is just that you've always had some
sort of technology governance or some sort of patterns and practices
that you would follow or that you adhere to lead to the
outcomes you wanted.
If you think about 15 years ago, how
would you handle things like performance or efficiency or reliability?
It would tend to be process oriented.
When we design things like the Simian Army or Chaos
Monkey or Security Monkey, they were similarly
designed to get those same outcome.
We knew we would have to design in a fundamentally different
What Security Monkey does is, if you
think of that guardrails versus gates principle, is it
monitors the environment but it's not stopping you from doing
anything. But it's identifying issues that we believe could be
security problems and they're flagging them for the security team.
It's a passive monitor versus "Let me throw up a gate in front of you to stop you from doing something." That's how a lot of our security tools work.
It's with that idea that you can't prevent everything from happening, but if you build a lot of muscle and a lot of skill around detection and response that will allow you to move pretty fast if you have higher confidence that you'll find issues quickly and be able to fix them in production quickly.
Guy: I think that makes a lot of sense. Chaos Monkey is more disruptive than what Security Monkey sounds like. Is there a Chaos Security Monkey? Is there a thing that just get some over permissions and breaks into a system and sees what it can get through? Or some aggressive version of a pen test?
Jason: We've experimented with kind of security chaos type things. We do run attack simulation tools and things like that.
Guy: More Red Team style?
Jason: Yeah, Red Team, and some security testing automation things. Nothing quite like Chaos Monkey, but I thought Chaos Monkey is such a fundamentally simple thing. It's this idea that what would happen if a monkey got into your data center and started unplugging?
Guy: Pulling plugs, yeah.
Jason: Because that's a real world way of testing
reliability. I remember early in my career
when I would do things like network engineering, you would always have these plans for
high availability, and everything had to work just right
for the failure would actually work.
And of course in reality it never quite happened that way, so with things like Chaos Monkey it really forced you to poke and prod at all different dimensions of your system and really see how you can respond.
Guy: What do you think is missing? If you had unlimited budget and resources, what revolution do you think is still missing there? I don't know if revolution, but like key opportunities that line security automation or the likes?
Jason: One of the things that we've invested some in that I would
like to continue is this idea, and we've had
different names for it, but it's just-- We have an open source routing
gateway called Zuul that our edge team has built and open
sourced many years ago.
But it's a modular system, so any traffic that comes into
is going through Zuul.
But it's modular, so you can add arbitrary
components to it, whether it's for example we do
some rate limiting on it.
But you can also add, we've experimented with adding for example, a web
application firewall module to it.
You can add a authentication module to it, or a logging
module to it, and there's that idea of having a proxy that
takes care of a lot of the security concerns.
That's really where I want to keep pushing, is that
I want developers to be able to focus on what they're actually hired to
do, and worry less and less about security.
It's not that I don't want them to care about security, I just want them to focus their
9 to 5 on what they're actually at Netflix to do.
The more and more that we can abstract and the safer we can make it for them, that's really the flag on top of the mountain that I'm going after.
Guy: Interesting. There's something about that statement that actually almost goes back to the perimeter, because it extracts it from where the application is into something outside. The catch would be, how do you do that in a way that keeps up with the applications complexity?
Jason: Yeah, it's true, it's not an easy problem to solve.
But similarly in a different way if you think
about serverless or LAMBDA as a way of--
If you're just running LAMBDAs you're just running functions.
There's a bunch of security problems that just don't exist.
That doesn't mean no security problems exist, it's just much smaller. That's the kind of philosophy where we're trying to get to, is where there's just fewer things that can go wrong. We have a higher assurance that we understand the environment and that we feel comfortable with the controls that exist.
Guy: Indeed. I talk a lot about serverless security and I feel
a lot of problems indeed.
They don't theoretically go away, but they're basically handled by somebody
this context, the platform, the cloud
So, you're saying "I want to take another chunk of those components and hold them for my development team as well." Unfortunately the attackers shift their attention into the remaining gaps.
Jason: But I think if you compare, take say 15
years ago where you are running on premise, you are
running a server, you're running all the network.
You are maybe running a virtualization layer, you're running the
OS, you're running the middleware.
Whatever, the application tier.
You were responsible for all of that, and then you contrast that to
LAMBDA where again you're just minimizing the attacks.
Or you're really aggressively managing the--
Because there's always more stuff to worry about, but you're really being able to control it there. So it's, to me it's a neat direction.
Guy: The smaller unit also allows for this privilege, and the likes on it.
Maybe one last question before we wrap up, in this sort of very empowered environment that you have within Netflix, what are your thoughts and are you concerned at all about this notion of a malicious or a compromised developer?
Jason: Malicious, yes.
Malicious insider I think is definitely something
really any security team is concerned about.
I think we acknowledge that malicious insider
is a very difficult problem.
If you think about Snowden, or any of the other-- These
are really difficult problems to
solve when you have a knowledgeable malicious inside
attacker that has a lot of rights.
We've invested a fair amount into, if you
think about identity, we try to make identity as pervasive as possible and
we try to use behavioral analytics to better
understand "Is this a developer acting
normal? Or any other employee acting normally?
Or is there potentially some kind of issue there?"
I would say, generally, it's one of the largest problems in information security. I wouldn't say really anybody has solved it. It's certainly something that we pay attention to.
Guy: I do think that you've opened Bliss.
You have the SSH access, so zero trust
plays a component to it, that at the very least
if you're unfamiliar with it-- Listening to this and unfamiliar with this,
Bliss is like an SSH proxy that is more single sign on
Or, more conscious of who's allowed to access the system at any given time without managing a proliferation of SSH keys.
Jason: It's a nice mechanism for managing SSH-CA,
so you can have short lived sessions that are user specific and
end point specific, that really helps.
Because we've always thought about you know the bash and host model is a nice way to choke point access, but there's problems with that architecture, so Bliss is intended to address some of those limitations. They give you more granularity on authorization, but also from an accountability and auditing perspective.
Guy: Yeah. That's one aspect of it, because you know at least that if somebody did get compromised they don't have the keys to the kingdom. They have to jump through the system and that that would be auditable, just managed in a more reasonable fashion.
Jason: Yeah. If you if you bring it back to the kill chain
model, one of the things that you're always trying to do is you're trying to make the
chain as long as possible, so that a number of things have to go
wrong in succession successfully for
the attacker to be able to achieve their objectives.
So as much as we can do to extend that and build more detections and things like that, it's generally what we want to invest in.
Guy: Sounds good. This has been great, Jason. Before I let you go here I like asking every guest on the show if you had one bit of advice or pet peeve or something you would like to tell a team looking to level up their security posture, what would that be?
Jason: I believe the real differentiator with any security team from organization to organization is how well you understand the company's culture and the company's risk appetite.
Because the body of knowledge for security is out there, it's knowable. But where the real art comes in is how you apply the company's philosophy on risk and the company's culture, how you shape that body of knowledge to the problem at hand.
I think many security folks they'll have their bag of tricks or they'll have their experience of having
done certain things a certain way at another company or
So to me it's really the customization, and really investing and really understanding what your company wants, what it's comfortable with. How it wants to operate, and being able to flex your security program to fit that.
Guy: That's a great advice. So, if somebody wants to tweet at you or such and find you on the internet to ask more questions, where can they find you?
Jason: Sure. Please come find me on Twitter, it's @chanjbs.
Guy: Jason, thanks for coming on the show.
Jason: Thank you. Thanks for having me. I appreciate it.
Guy: Thanks everybody for tuning in. Hope you join us for the next one.