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What Alzheimer's Teaches Us About Security

BSides Lancashire 202619:425 viewsPublished 2026-07Watch on YouTube ↗
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Drawing on his mother's Alzheimer's diagnosis and his own background running security transformation in media organizations, Andrew Lucas argues that cybersecurity's obsession with technology neglects the human system. He connects dual-process theory, resilience engineering, and observations of memory fragility to practical recommendations: remove blame for human error, deliver cues at the moment of need, normalize pausing, and add behavioral equivalents of MFA like two-channel verification.
Show transcript [en]

So, uh, so yeah, last year's talk was a magic show as well as a presentation, but I'm afraid no magic this year. Uh, this year I've got something a little bit more personal, bit more serious, uh, but also, I hope, illuminating and helpful. Um, it's about what Alzheimer's teaches us about, uh, security. Now, before I kind of go into that a little, let's just try and work out where the origin of this comes from. You've already heard Rob rant about this. Um, uh, this was a slide that I got my background. Actually, by the way, Rob, not even close. Um, my background was 25 years in media in the arts. Um so the idea that he is the is the the the most

cyber security virgin or um inexperienced one in this room absolutely not. To be fair I did have computers and just ensure I have some credentials for you. I did have cyber uh uh computer science in my background. I did it as part of my degree. I've actually run security and IT transformation projects for pretty much all of the organizations that I've worked in including the BBC. it just never was in my job title. I just got asked to do them because of the because of my own background and interest. This this particular this uh uh annoys me for some of the reasons that Rob talked me about. First of all, uh um human error. Uh it's absolutely

fundamentally the wrong way to look at it. Um the statistic 95% I would probably argue uh I wasn't entirely sure. It was IBM by the way. didn't know who it was from. It was from IBM in 2014. I'm not entirely sure that the statistic was uh well sourced and of course they're Americans and so therefore they can't spell recognize correctly. Um it drove me to try and understand well I wanted to understand what is it about that 95% and why is it that I look around and just as Rob was saying that we're seeing the focus of our socio technical system on the technology not saying they're not it's not useful really important but actually

there seem to be so little focus on people so very much kind of those origins that uh that Rob was talking about at the end there. So I kind of started looking at various um psychological uh and I'm not an expert in psychology so you can kind of um and one of the one of the theories that I'm going to touch on here is dual process theory that basically breaks carnean uh building on on previous people as well but he divided our thinking up into system one thinking which is essentially a very fast and we again 95% of uh of our thinking is rooted in uh our system one thinking. Um and then there's the

system two. The problem is that our um we trick ourselves. We think we're doing a lot of system two. We think we're being very analytical and and and working things through. The truth is a lot of our thinking is emotional. It is it is based in that system one thinking and we're then backfilling it with the system two. Now I would say um our colleague over here will probably uh uh say to me as well actually there is to some degree an element by which this dual process theory has been criticized for being slightly naive for missing a lot of the nuance. I would say yeah that's absolutely right but it's a really good uh uh easy concept I think

upon which we can kind of get hold of some concepts. We don't need to be completely psych psychology experts. we've got those people out there who are doing that. But I think it gives us something to get hold of in part of that people uh people issue that Rob was talking about. It also got me thinking about the biology of it all as well. And so therefore it was probably not surprising when uh in summer of 2024 so nearly two years ago now um my mom uh was diagnosed with Alzheimer's suddenly very over very much overnight although we'd had some concerns about the you kind of usual forgetfulness. I have that myself anyway. So um but uh

suddenly we had a a a dramatic turn in the way that she was behaving and understanding who she was with i.e. her husband Peter um uh and just not recognizing him quite distressing. It led to her going into hospital. So this picture is actual fact taken just outside one of the units down at the Royal uh Lancaster uh infirmary on a beautiful sunny day. It was one of the first days that we actually managed to get mom off the ward. Mom's background, by the way, was as a nurse of geriatric patients. She had nursed a huge number of people with um dementias and Alzheimer's in her past. Um but um uh and so when she was in the hospital, she

was actually thinking that she was there to provide advice to the to the to the nurses who were in there. She didn't see herself as a patient in there. She saw herself as somebody who had come in to guide and why wasn't she allowed home from this job that she'd suddenly been suddenly been given to her. Actually, that's one of the major issues that we've had. But we'll um I'll maybe touch on that if I have time. But why am I bringing together uh Alzheimer's and cyber security? Um obviously there's a very personal story for me for both. I've got my background was around people rather largely. That's why I started asking the people questions. Um, and then I've got

my mom who's got Alzheimer's. So Oliver Saxs um uh was did a lot of very famous studies which looked at people who had um uh mental disorders, me uh problems and his interest there was not just about the helping those people although that was very much a motivation but it by us understanding the diseased brain we also help to understand the working brain because If we break our bone, we go into the hospital, we have an X-ray, we understand what's going on with that bone. If we've got heart problems, we put electrodes on our system. We could also stand as well, but we look at the results of those and we understand what's going on with that heart. Very

much more difficult to do that with the brain and the way that we think, the way that we make decisions. But uh I was inspired by Oliver uh and the work that he'd done. These by the way, these are books. I don't know whether you any of you remember those uh pieces of paper with print on. Um but the um he a huge uh amount of literature also the the the person who was the the the psychotherapist in uh the Awakenings film. Uh also uh for those of you who've got a classical bent, they're the subject of an opera uh called the man who mistook his wife uh for a hat. In fact, the subject of this particular

book here. So by bringing those together, we can maybe understand a little bit about what the functioning of the healthy brain is. So just uh a very quick uh primer to what actually is happening with Alzheimer's. uh your neurons uh are basically got two uh key processes that are happening. uh uh you've got uh chemicals that are essentially wrapping around the neurons and preventing them from communicating to other neurons and then you have um uh towangles which are going on within uh the neurons and essentially degrading it and that ultimately leads to the kind of the the loss of memory mass the brain mass and essentially the the output of it is memory loss um although I would actually

say It's interesting that it's not always loss so much as that the memories are fragile. It's like that they're not able the chemicals are not firing and they're not able to access those memories rather than having been lost. So actually that comes in waves and sometimes my mom is perfectly uh clear thinking. Um and by the way I something else this is not a madness. I don't perceive this as a madness that my mom is experiencing. Actually, a lot of what she is asking is enormously rational. It's just based on the fact that she can't access that memory that the person in front of her his her husband or that she had been married or where she is.

So, of course, what she wants to do in that context is she wants to go home. So, it's a perfectly rational thing we would all want to do, right? I mean, um uh but uh it's it's it's actually basis is in the is in the loss. So some common themes really around both what I perceive as some common themes around sort of both Alzheimer's and security that sense of uncertainty um that uh your current approaches will work for a certain period of time and that you'll get you'll be able to assist and then suddenly they'll stop complete surprise. You don't you don't suddenly my mom is immensely surprised. Why am I here? Where how did I get here? what

what what what did I do? Um uh a limited capacity to adapt because actually you know in terms of your energy levels in terms of your thinking it's limited about what you can achieve. Therefore you have balancing priorities uh and also that actually your it's your experience of this is is affected by those who are around you. It's a dynamic system. It's not a linear system. Well, that actually seems to uh reflect also a concept called resilience engineering. And there's a there's a somebody called David D. Woods who's done a huge amount of work here. And it seemed to me that actually when we looked at it, there was a fairly close read across from the uh

principles that underpin the thinking around resilience engineering um to those experiences, those common experiences that I was finding within the cyber security uh cyber uh information security by the way uh and um and Alzheimer's. So actually really important this because we currently as you will most of you be aware I suspect we're currently exper there is a bill going through the house uh the houses of parliament just at the moment the cyber security and resilience act and actually what resilience engineering tells us is that people are absolutely critical to your organizational uh to resilience and yet if you look through that bill if you look through the uh codes of conduct. If you look through

the guidance and the standards that we all work from, just as Rob was saying earlier on, the people are often absent from that really. So what are the observations and lessons? Um manmary is fragile. It's uh needs constant cues to reinforce their recall. So why are we building security systems that are based around uh the ability of our uh staff to remember that that segment of a document of is one of a hundred information security documents even the people who wrote those documents will not be able to get you to that right part. They have no way of getting to that. They can't recall it. Um uh so why are we expecting people whose jobs are not cyber security or not

information security why are we expecting them to be able to remember that. So what could we do? Well actually let's just base start from a point whereby actually forgetting things is perfectly normal. It's a perfectly human thing to do. So can we actually remove the blame for that and actually provide guidance and prompts uh that are delivered to users at the moment that they need it rather than necessarily then having to remember what to do from uh from a previous point. Is there an ability, for example, um uh a rhetorical question? Is there an ability for us to put a a a button that will report through an email very simply? Um rather than having to

remember the email address that uh a convoluted, by the way, how many convoluted email addresses have we seen about which which address to send a a fishing email or anything to? Let's make it simple um uh and uh not complex. So for example uh is do we really need 100 level uh infosc documents or could we start with a basic set of 10 principles at the very top that lead us through at the very least lead us through on a journey through to a more detailed uh set of policy the cra constantly my mom is craving obviously being with her husband the fact she doesn't remember who who he is um is is the key problem, but also that

sense of routine. Um, so let's understand that people all do trust what is familiar. They're looking for those things that are familiar even when they're necessarily wrong. Right? So the QR code is it looks perfectly familiar. I think that looks all right. Well, I can scan it. So what can we do about it? Normalize that pausing. Again, something you mentioned in your talk, Kelly, just stop, think before you proceed. Just make sure that we're encouraging people to do that, particularly in the in the situation of a uh request that seems out of the ordinary. Um uh so let's rather than teaching people not to do something, let's teach the positive of what behaviors we would like them to

do. Okay? make that verification a habit and then I would say I don't I've not seen this so um uh this may be something that everybody's implementing I haven't come across it two channel verification it's the it's the behavior's equivalent of MFA yeah if you've got a request that feels in any way unusual or the timing of it is uh unusual or something about it does not feel right to you. Let's go and verify it via an alternative channel, via an alternative path. Alzheimer's p they need reassurance, constant reassurance. Most of my day uh is spent uh and by the way my I moved my parents and us to a house to live together in order to do this. So I'm

actually experiencing this not quite 24/7 but a large part of the day. Um uh so that reassurance is absolutely critical. If I don't, she spirals up into a panic. When you're up at a panic, nobody is thinking straight. Okay? If you're waiting for your users to be in the middle of a crisis situation um before they understand what they need to do, it's too late. You're going to have to you can can't they're not going to listen. Um, so we again nothing that's uh uh especially uh novel there. I think we all should know that that's when we're people when we're tired, we're busy, overloaded, that's when most likely those errors are going to uh so

what can we do to uh make sure that we're expecting those errors are going to happen under practice, under um under pressure um and to prioritize the safety over the speed and make sure that what we recognize when those time those incidents are going to happen and what can we do to fix the system. By the way, I'm not just talking about a technical system. If we could provide technical support, great. But I'm talking about the behavioral system as well. What can we do to fix the system? Let's not blame the individual. Let's look at the bit of the system. Again, Rob talk most like I could have probably done this could talk in about 2 minutes because most of it

was covered by Robin. Um and then finally emotions that system uh one thinking we are so driven by our emotional thinking um uh and so therefore it's not surprising that that is when um that's when things can uh um uh lead to confusions and to and problems. So, we need to recognize that. We need to recognize that emotional stressors degrade judgment. And so, what can we do? Let's try at the very least, let's remove the blame from errors. I'm not saying that you don't need to have ultimately um uh some HR policies that deal with uh persistent uh problems, but um and serious problems as well. But I think that there is a I think it's about

the language that we're using. If we're threatening people, it's not helping. All right? It's the wrong message that we want to be. So, what could we do to turn that and make it of a more positive incentivization to uh to do the right thing rather than constantly telling people to do the wrong thing which they won't remember anyway. Okay. So key lessons design for human fallibility. Um don't base our systems on the expectation that people are going to act perfectly as we want them into those documents. They won't. If you design your system on that basis, it's going to fail. Replace judgment with a more structured um uh uh and habit. Try and build it

into h people's habits. reduce that cognitive load. Uh, and let's try and turn that um, uh, negative view into a much more positive non-blame based culture. um that encourages people to uh talk about the issues to report things quickly and to uh and to reflect on what's happened so that we can then actually you know the best learning that we have is actually when things fail when things go right we're not learning it's when things are failing so we need to actually encourage people to just talk about it and then have a positive view about well okay so what do we do to put that right and that is my mom and Alzheimer's and hopefully

a little bit of interest uh on information security. Thank you.

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