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Welcome back to RSA Identity Unmasked. Identity infrastructure has become one of the most critical dependencies in modern business. Every user, every application, every transaction relies on identity systems operating continuously and securely.
But as organisations centralise authentication and access control, many are also creating new operational risks. When identity becomes a single point of failure, business resilience is at risk. The reality is simple â if identity systems fail, operations can stop.
In this episode, we will explore why identity resilience is becoming a critical part of operational resilience, from authentication continuity and failover design to regulatory expectations and the growing importance of resilient identity architecture.
I'm Ingo Schubert, and today I'm joined by David Lello from Burning Tree, Paul Mulvihill from our engineering team, and Jon Nicolas from our Microsoft Alliance team. Welcome. Let's get started.
So when identity becomes a single point of failure â how dependent are organisations on identity systems, often without realising it?
ããããã»ã¬ãïŒ
Right now? Critically. We are seeing, time and time again, identity systems being targeted by threat actors â Scattered Spider, for example â have attacked and focused on identity systems. Take down the identity system, you take down the organisation.
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Right. Yeah, and I think that mirrors â it's now the backbone for organisations, isn't it? Identity. If that is compromised, the whole business can very quickly grind to a halt. So if it breaks â if the identity infrastructure, the authentication backend, is brought down to its knees â what breaks?
ããããã»ã¬ãïŒ
Well, it's interesting. I had a fascinating conversation with someone from the business continuity team at one of the organisations who suffered one of these attacks recently. And when the attack actually happened, and the systems were down, one of the most frustrating things was that they couldn't actually get hold of anybody, because their entire communication platform was linked to access control. They couldn't even call a team together to say, 'We have an issue.'
It happened on a weekend, and there was an outage. They knew they had to do something, but they had no way of actually getting hold of people, because they did not have a documented list of who they should call in the event of something going wrong. They had taken that entire list of who to call when something goes wrong, and put it into their 365 tenant.
ã€ã³ãŽã»ã·ã¥ãŒãã«ãïŒ
Of course they did. That's where you put it so everybody can get to it. So that means â the identity infrastructure is like critical infrastructure. Like in a society with critical infrastructure, traffic and transportation, all that. So identity is that?
ããŒã«ã»ãã«ãŽã£ãã«ïŒ
Absolutely. I think we've created the problem as identity professionals over the years, because identity made a lot of sense in terms of bringing systems together to make it easier for end users. So we started doing things like single sign-on. And then we said, 'Actually, rather than purely rely on single sign-on and have multiple repositories, we can be more cost-effective and more efficient if we just centralise the access control.' And so we started creating simplification and harmony â making it easier for the users, better for the business.
And what we did is we created a single point of failure. And that single point of failure now is not just access control for a system â it's access control for all the systems. You take that out, and all of a sudden you don't have access. If you don't have access, how does the business function? How do customers authenticate? How do users authenticate? How does staff get back in? How do privileged users get online in order to solve the issue?
ã€ã³ãŽã»ã·ã¥ãŒãã«ãïŒ
Yeah, and the word 'critical' I think is quite important there with regards to regulations. You see some of the language in DORA and NIS2 â they talk about critical IT infrastructure, of which now MFA and identity is a key part. So this is now, to your point, we're going to make sure this is controlled, audited, because it's now the backbone of organisations.
ããŒã«ã»ãã«ãŽã£ãã«ïŒ
Yeah, absolutely. Because then you need to start thinking about â you've got that core system. What are they then going to be putting in place to try and have a solution when part of it goes down? So if you've got everything in an Entra tenant, if it's all in one place â well, you've just explained the problems of that. So how do you get around that, so actually, I can still get at things, or I can get the information I need? Is it as simple as the core people are exported to a safe list? Is it that you do something like password lists through another solution, so you can get into systems even if the identity source is still out? How do you factor that into the design to minimise the impact so you can fix the problem when it happens?
ã€ã³ãŽã»ã·ã¥ãŒãã«ãïŒ
But the reason why we have the centralised approach â the idea behind this is sound, yeah? Because if you have it spread out across potentially a global infrastructure, that's hard to manage. It's hard to manage to keep everything in sync, have the same policies everywhere, make sure users can authenticate everywhere. For a small company, that's easy. For a medium and large company, that's impossible. So centralisation makes sense, doesn't it?
ããŒã«ã»ãã«ãŽã£ãã«ïŒ
Absolutely. It makes a lot of sense, and I still think it is the right approach to do it. But I think if we go back to DORA, what DORA's trying to do is say, what do you do in the event of? How can you make sure your business can operate if your critical infrastructure goes down? If I have a critical failure of the system, I get my staple backup and I restore from scratch â my operating system, my directory, my data, everything gets restored, no problem. Except when Scattered Spider go and inject ransomware into your backup, and your backup is corrupt. Now all of a sudden I can't back up because my staple backup is corrupt. So what can I do about it? Well, I can back up the data. I can rebuild the directory. There's a dozen ways to skin a cat. We've got to start thinking a little bit like a criminal, and start thinking, 'What are they going to do, and how can I mitigate against that?'
ã€ã³ãŽã»ã·ã¥ãŒãã«ãïŒ
So there are then different types of resilience gaps, because of course you can think of it as an architecture, a network, with different applications â and yes, most likely the most central part of it is the identity infrastructure. But what other gaps are there?
ãžã§ã³ã»ãã³ã©ã¹ïŒ
Just to touch on the kind of hybrid approach you get â I was thinking about this the other day, and with identity, you might have moved from Active Directory to Entra. But when you design your core systems from the ground up, you have N plus one, N plus two, depending on your risk appetite. This is what you're going to design for. We know we can do that with power supplies, network links, switches, infrastructure.
I think one of the problems we see in a lot of organisations is that people think security and resilience are one and the same thing, part and parcel of the same process, or opposite sides of the coin. The reality is they're very different things. You can have a very secure system that is not resilient. You can have a very resilient system that is not secure. So when we start looking at design and control, we need to build our identity systems, and all of our systems, in a secure way. But we also need to think about resilience in terms of what happens when it fails. Not if it fails â when it fails. So when it fails, what do I do, is the exam question we're trying to answer here.
And the fact that DORA has come along and said it's critical infrastructure is a hint as to where the problem is. When you go to energy companies, water supply utilities, telecoms â resilience means I've got a system over here, and I've got a system over here. This one goes down, this one takes over. That's critical infrastructure. If identity is critical infrastructure, I've got to have my N plus one.
ããããã»ã¬ãïŒ
But I think it needs to be clear that if disaster strikes â and it could be whatever â there could be an excavator ripping out the fibre optic cable by accident. Could be one of the tankers drags an anchor. So it could be a deliberate attack, or just by accident, but the result is the same. And then the disaster could be a natural disaster as well. So during the recovery, things are not normal. There is some impact â because a hurricane went through, or whatever. So it should be clear that during the recovery, there probably is a time at least where things are not quite as they used to be. You want to get back to that state where everything is fine. But also what you want to do is operate a minimum viable product in the interim.
And I think this is where we can learn â there was an organisation I was involved in that had suffered a big ransomware attack, a manufacturing organisation. And surprise, surprise, Active Directory was taken out, and a number of different systems ground to a halt. The organisation had to close all their factories and stop production. That backlog cost them hundreds of millions of pounds in revenue, because they couldn't manufacture for a period of time. Why couldn't they manufacture? Because they couldn't print shipping labels.
So in that scenario, can I have a minimum viable product to print shipping labels? Handwrite them. Something. Because that's where we forget about the basics of what the business is. In the digital world, we become so reliant on the system telling us what to do that we forget about the basic business process. What am I doing as a company? What is my product? And if something goes critically wrong, how do I maintain a minimum viable product to continue my business until my technical people can recover the system?
I always compare it to light â and John's heard me say this a couple of times â it's not as bright as it used to be, but it's not pitch black. The light will be dim, but there will be light. So there are some things that still work. Yes, it will be bad, wall-to-wall, because it's a catastrophe most likely, but you're not going belly up because the printer doesn't work â you just ride it. You're still maintaining your security footprint in there as well.
ãžã§ã³ã»ãã³ã©ã¹ïŒ
Because the chaos of an outage â you spoke about this before â that's a really good entry point for attackers. So when you go, 'We've lost some key systems,' you need to make sure you're still secure with the ones that are going to be part of your MVP to recover. Otherwise you've just got an open goal for the attacker.
ã€ã³ãŽã»ã·ã¥ãŒãã«ãïŒ
So bringing it down a bit, some detail. What does a resilient identity architecture look like? What's an example? What components are there? How would it be designed?
ãžã§ã³ã»ãã³ã©ã¹ïŒ
I think in the first part, you have to understand how your business operates, first and foremost. You need to understand where your key assets live, because some organisations will be born in the cloud, so they'll have different requirements to those running a full hybrid estate. And we know there are many industries that will continue to have on-premise infrastructure â stuff in stores, in banks, whatever. So first and foremost, understand your infrastructure, and then how you need to protect it. Take guidance from the likes of DORA and NIST, because there'll be bits you clearly missed in your whiteboarding session.
ã€ã³ãŽã»ã·ã¥ãŒãã«ãïŒ
So for me, that's the first step â understand where you are as an organisation. I have a pet peeve, as you know â people not knowing where they are, and always looking at where they want to be.
ãžã§ã³ã»ãã³ã©ã¹ïŒ
Exactly â because that actually enables you to prioritise, make the right decisions. Once you know what you've got, it's almost getting your teams to work out how they would break something, and using that information to say, 'How do we make this resilient?' We talked about the disaster side of something not being available, but you've also got to bear in mind you're just doing an upgrade, taking something offline for five minutes, ten minutes, whatever. These are things you try to do through a change window with minimum impact, but they happen. So make sure whatever you put in place â all cloud, hybrid, on-premise â you've got enough resource spread across it that it minimises impact to any one area or core segment of the business. Just so finance goes offline for an hour, but manufacturing and label printing continues. At least then you can deal with the backlog afterwards.
ã€ã³ãŽã»ã·ã¥ãŒãã«ãïŒ
So coming to hybrid, because you mentioned it before â how would that look for authentication, for example? Why would that help? I get that if I'm completely out in the cloud, and the architect did a good job, MFA is everywhere, so cloud is down, it's fine. But how does a hybrid model help there?
ããŒã«ã»ãã«ãŽã£ãã«ïŒ
Just on that â I think even if you are cloud-only, there are very good use cases for offline authentication. You're cloud-only, but you're probably all going to run off a laptop somewhere. So how do you get into that laptop if your cloud service is unavailable? So cloud-only still has questions to answer in those scenarios. Because you can have multiple clouds â a multi-cloud strategy, which means you're completely cloud-based, but it might be that one cloud is down for whatever reason while the others are still up. So in the end, you remain operational to some degree. Again, the light is dimmed â but it absolutely applies to completely cloud-based organisations as well.
ããããã»ã¬ãïŒ
I think that regulations like DORA and NIST â I always find them encouraging and absolutely disillusioned by them at the same time, because they should never have needed to be written. It is basic 101 business function we're talking about. If you go back a hundred years, before the internet, when you had a factory manufacturing widgets â if something happened in the factory and I couldn't manufacture there, what did I do? I did something else. Maybe I had two factories. That's what it's about.
ã€ã³ãŽã»ã·ã¥ãŒãã«ãïŒ
So this all â because we're talking about risk here and business continuity â that clearly sounds like it's also a board-level problem, right? It's not just an engineering challenge, it's a board-level problem dealing with risk. That's the whole reason for existence.
So, final question. If you were a CISO, and you had one aspect to improve, one starting place â what would it be? Where would it be, to gain this, or to improve resilience in the future?
ããããã»ã¬ãïŒ
You said it a moment ago â go to the board. In the UK, we have a great advantage: an organisation called the NCSC. And the NCSC have published guidance on how boards need to become more aware about cybersecurity. The reason they've done that is because the Companies Act in the UK has also said that a director of a company is accountable for the decisions that are made. So boards are now trying to understand what this thing called cyber is, what security is all about. And now is the perfect time to go to them with good, sound business evidence of why they need to pay attention.
Start with the board, because they really do get this stuff. When you sit down with a board and talk to them about business processes, control, security, MVP, resilience â they know what they're talking about. They're not stupid people. They haven't got to their position by luck. They're very bright people. And if you bring up single point of failure, they usually listen.
ãžã§ã³ã»ãã³ã©ã¹ïŒ
Exactly. And I think then that cascades down. The organisational employees have to understand their role in securing the company. If they just see security as a hurdle or a blocker to doing their job, you have a challenge, because they will always find ways around it. So you have to empower them to say, 'I can't do this securely, we need to do it differently' â giving them easy, convenient, secure login when it's available, but giving them the failover option when they need it.
ããŒã«ã»ãã«ãŽã£ãã«ïŒ
So for me, it's a whole organisational mind shift. It's already gone on at board level, as you say, David â just making sure everyone else is on that journey with them.
ãžã§ã³ã»ãã³ã©ã¹ïŒ
Right. But I agree with both of you â it's getting the board in, top-down, and involving the workforce you've got. This is what we need to do, and why. Do you see problems? So the workforce helps you shape whatever the implementation looks like, in a way that meets the security need but also reflects how people on the ground actually need to operate. It's all well and good putting something in that is secure and resilient if no one can use it. So having that middle ground of both parties involved means they're both invested in going, 'Right, this is what we're going to do, based on everybody's input.' We've then got a solution everyone hopefully supports adopting, because everybody's bought in.
ã€ã³ãŽã»ã·ã¥ãŒãã«ãïŒ
Yeah, and I think we've spoken about it before, but remove the conflict between teams. The compliance team saying, 'Hey, security team, you have to do this' â it's now about working together for a combined outcome, not being at loggerheads. So just make sure friction is removed within the organisation.
This is a subject that touches almost everything, because infrastructure touches everything. This is something we could talk about way longer than the time we had here. David, Paul, John, thank you very much.
Identity resilience is no longer just an infrastructure discussion. It's now a business continuity issue, a security issue, and increasingly a board-level concern. As organisations become more dependent on identity systems, resilience must become part of how those systems are designed, governed, and operated.
If there's one takeaway from today's discussion, it's this: security without resilience is fragile.
Thanks for joining us for this episode of RSA Identity Unmasked. If you found the discussion valuable, subscribe for future episodes as we continue exploring the issues shaping identity security. And for more insights and resources, visit rsa.com. Thanks for watching.
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