Cyber-Informed Engineering: Cyber Awareness Podcast, Dr. Jesus Molina, Waterfall Security

Courtesy of Brett Sayles

With cybersecurity tools like firewalls and gateways, there is always a slim probability that they can be breached. So long as it’s only data being lost, the consequences aren’t overly severe. But with more attacks focusing on critical infrastructure and delivering physical impacts to operational technology (OT), that attack probability needs to be closer to zero.

In the sixth episode of our Cybersecurity Awareness Month podcast series, we were joined by Dr. Jesus Molina, director of industrial IoT at Waterfall Security. He talked about threats to critical infrastructure, how artificial intelligence (AI) is more beneficial to attackers and why he found the new “Mission Impossible” movie so inspiring. Listen to the full podcast here.

The following has been edited for clarity.

Gary Cohen: Cybersecurity Awareness Month generally highlights a few key behaviors, basic behaviors that not everybody does — things like multifactor authentication, strong passwords and recognizing phishing. What do you think people should be focusing on this month?

Dr. Jesus Molina: I could give the age-old, don’t click on that sketchy email advice, right? That’s what a lot of people say in this month, but let’s go in a different tack of what I think we should be aware of. In Poland recently, the trains went off the rails literally because there’s a cheap radio friction device that these hacktivists have been using, and as a result they were able to disrupt the rail network in Poland. How this works is basically you send some beeps, and that is taken by the train as like, “I need to stop.” So this cyberattack becomes physical. Attacks that used to be focused on data now we are seeing in our daily lives. They have disrupted the rails in this case, but also we have seen it in buildings.

Five, six years ago, I was able to abuse a protocol called KNX, and I was able to switch on the lights. I told you about that in the podcast before. So news this month has been that another building has been hacked. In this case, what they did is there is this keys management that this KNX device has, and attackers easily can change the keys. Once you change the key, the building is unusable. So everything in the building automation system that cost $10 million in this case, or something like that, all devices were rendered unusable because they changed the keys.

Again, that means that they have to go in manual mode. That means that there’s disruptions in the HVAC systems, disruptions in the elevators. Our own research at Waterfall is showing that year-to-year attacks with physical consequences are doubling every year since 2020. Before that last decade, there were 10 attacks with physical consequences. In 2022, our research shows that it was 50. This year, we expect to be around 120 or 100-something — around the 100s if it goes as it’s been going. So we’re seeing attacks with physical consequences doubling every year. What I think people should be aware of is that attacks for cybersecurity as we knew it are changing and they’re changing in a way where we can feel it in our daily lives, the consequences of a cyberattack.

Tyler Wall: That’s an excellent segue into our next question. What trends or developments in cybersecurity are you particularly excited about heading into 2024?

Molina: We OT cybersecurity people always pitch ourselves against IT people, or against, I would say, the IT tools, which are not be used in OT for cybersecurity. IT is about data. OT, we are about operations. What we want is to keep this physical attack from happening, to keep operations running. But what happened last year — and people are starting to use, and there’s a community around it — is what we call cyber-informed engineering, or CIE, and this is OT going to the other side, going to the engineering guys and saying how we can abort cyberattacks using engineering-grade tools. So we’re saying that OT, rather than use the common risk way of doing things of like, “Probability, multiply by consequence is risk,” it’s about, “We don’t care about the probability because that changes all the time. I care only about the consequence.”

It is the same as when you build a bridge. You build a bridge, you find the right place to put the bridge and then you try to get the 0.00001% probability, or no probability, that the bridge will fall in case there are a lot of people going through the bridge. That doesn’t happen in cybersecurity today. There’s a 3% probability that this firewall is hacked, and we’re OK with it because the consequences are data being stolen. The consequences are not people dying. So people have taken that approach to cybersecurity. This new way of looking at things has been promoted by the Department of Energy. They have created the framework for cyber-informed engineering, and it was based on three books: “The Secure PHA,” which is talks about hazards and how to put that in cybersecurity, “The Country in Cyber Terrorism” and “Secure Operations Technologies.”

They put it all together last year, and a committee has formed around it. They’re trying to use engineering-grade tools such as relief valves. In the case of a cyber severe attack in a dam, these relief valves will prevent the attack from doing physical consequences. You can breach so much but only affect data, not consequences. And, again, it’s incredible that the committee is being formed, so I’m very excited to see what this brings us in 2024 — what tools appear that used its concepts and what new way of evaluating risk appear by using this new trend that is going to engineering, trying to look at its ideas and say, “What can you do for us?”

Cohen: I know you’ve got some hacking experience in your background. Can you share a memorable experience or case from your career that really highlighted for you the importance of cybersecurity?

Molina: I know that you know that I hacked that building in China, this skyscraper, and I was able to control every room. But let’s do something different for this one. Let’s go back much farther in the past. Let’s go back to 1992. In 1992 in a high school in Spain, there is this very handsome teenager looking at the screen. In these times in high schools, there was no internet. Internet was reserved for universities and definitely was not Windows. Windows was released that year in 1993, Windows 3.1. So this kid is looking at a screen using DOS, which was the operating system that most computers used back then. Suddenly, all these letters start falling off to the bottom of the screen. You start typing and the letters start falling. The kid was mesmerized. It was like, oh my god.

He was looking at one of the first, or the most known, viruses back then, which is Cascade. There was no internet, so people had to use a floppy disk, and the floppy disk was infected. When you put in the floppy disk, then the computer got infected with what was one of the first viruses. That year also there was another virus running around we called Michelangelo, which they said in March will make all the computers go bonkers. So while this kid was mesmerized, the lady that was in control of the high school lab was not happy. So he decided to buy the most amazing tool that was around back then to prevent viruses, which was Norton AntiVirus. The Norton AntiVirus was amazing back then. It was like, “Oh my god, there’s this tool that can find these viruses.”

At the high school, there was this senior guy that was in charge of it that this kid, who was a sophomore in high school, he didn’t like because he wanted to put a virus there for some reason. Because he thought it was fun and cool. So this kid every day will go and check if there was viruses in the high school network, and he will find viruses sometimes. One day, it’s Cascade. Maybe there was another one. So that happened every day. Every day, this kid would go open the thing, the first thing he’d do is go to every computer in the lab and check if there were viruses using Norton. One day, he started to check if there were viruses in the lab, and every computer in the lab was infected by a virus. The virus happened to have the name of my town, which is Tarragona for some coincidence.

Every computer in the high school was infected, and it says infected in the master boot record. It said like “MBR, master boot record, infected. You cannot delete this virus. You need to wipe out the computer.” So the lady that was in charge, the professor that was in charge, got crazy about it. It’s like, “Oh my god, we don’t want to. These computers are expensive. They are new. This lab is brand new.” You have to erase everything, get backups, get it down. So they did it, and they rebooted, and again the virus appeared. So my question to you guys is how do you think that happened? How do you think that somebody with no computer experience, like this good looking teenager had, was able to infect without internet every computer in the high school?

What this kid did is he figured out one thing that is very in right now, everybody’s talking about, which is supply chain. Supply chain attacks. He didn’t know how to code very well. He was not able to do a virus that infected the master boot record, but he knew one thing according to the books he read, which is he understood how the antivirus worked. So he got the keys, unlocked where the antivirus was stored and this floppy disk was writeable. There was a little window, and you put a tape on it. Then, he rewrote it in a way where he added in the signatures because antivirus worked like IDSs work right now. It finds a common signature in every virus that is only common for that virus.

So what he did is find something common enough that is in most executables but not so common that it is everywhere. He placed that signature in the signature thing of the antivirus, which contains all the signatures. He had one line saying virus Tarragona, this signature, which was common but not very common, delete the master boot record, the computer, because the master boot record is infected. The reason why he did something so strong, according to what I read, is that he truly believed that seeing that all the computers were infected, people would automatically say, “It’s not the computers that are infected. It’s the IVS. It is the antivirus which has been corrupted.” But actually what happened is when there is a huge shock and everybody’s like, “Oh my god, everything is infected.” People don’t think about it.

People think, “We have to shut down every computer. We have to clean every computer.” They don’t think that that cannot be possible. How is that possible? The takeaway from this Awareness Month is that don’t trust trust. Just because you have nice ideas, because you have a nice antivirus, because you have nice whatever, these things can be corrupted, too. Software can always be corrupted, and people now are using that to infect many computers at the same time by corrupting something you really trust, like the SolarWinds. You corrupt the software that is installed in your computer, and then you believe that it must be an attack on you. Well, it’s an attack to something bigger or something more alien to you, something you trust. That’s the first supply chain attack I know that worked.

Wall: In recent years, we’ve seen a lot of cyberattacks occur — from JBS to Dole to Honda SNAKE. What have we learned from recent major attacks?

Molina: Again, I’ve talked about the physical consequences concept, from the disturbance on the railway in Poland and the KNX problems I talked about. But what we’re learning in recent attacks is that people are abusing very legacy things, very legacy protocols, things that are there for a reason and have not been changed for a long time and have a huge impact on the system. Let’s forget OT for a second. Let’s talk about email. Email is something that I am amazed that email today and email 20 years ago, we use the same protocol, SMTP. It’s quite similar how email is sent. It’s quite easy to corrupt mail servers the same way we used to do it. Things haven’t changed much, even if we have other tools that are superior, like Teams or Zoom or other ways to communicate that probably could be made more secure.

But still we use email because it’s easy. It’s simple. We are used to it. But the cybersecurity that you can add to email is very little, and that’s why phishing attacks using emails are so prevalent. It is quite insane. So going back to these more OT attacks, which are the KNX attack or the attack in the Polish railways, both use something that everybody knows. This attack that was happening in KNX was known since 2021. So it was not something unknown. We know KNX is a very bad protocol for cybersecurity, but people use it because it’s convenient. The same thing happens with this convenient way of signaling to a train that needs to stop because it’s convenient. So what we are seeing in these attacks is people are starting to go through things that are kind of hidden, so once you find it, it’s very easy to abuse.

My hunch, honestly, is that the main issue here is that maybe artificial intelligence is helping a lot to the people on the offensive, because a hacktivist before had very little probability of finding out that he can send three little tones to a train to stop. But now he has a research assistant next to him that can provide all this information that was hidden. We had to do a library or go to the internet and ask, but now you can ask ChatGPT if you put in the right prompt. I have been exploring this quite a bit the last three months. “Hey, tell me ways where trains can be stopped.” Obviously, you have to give him a good context of why you are asking this question.

But if you do, he’ll give you an answer. Like, “Trains can be stopped for faults using the signaling system. It’s works like this.” And the attacker was like, “Tell me more about this protocol to send. Make me a program. What kind of radio device can I use in order to send data to that train?” “Oh, the frequency this protocol uses is like a 100.” So what we are seeing is people abusing things that were present before for a long time, legacy protocols. The advent of ChatGPT and all these things boils down to a very bleak 2024 where we are going to face offensive attacks from people with low knowledge of things that are quite sophisticated for their knowledge.

Cohen: I think I know what your answer is going to be to this question, but what emerging technologies do you see impacting the field of cybersecurity in the near future?

Molina: I actually find the fact that we are going through more of a way to evaluate risk, which is based on engineering ways of looking at things, a total shift and something that can really prevent bad things from happening because of the advent of artificial intelligence. If you try to go to ChatGPT and say, “Hey, make me a malware,” it will say no. And if you try to use it — and I have use all tools that are available, PentestGPT, WormGPT, whatever GPT, whatever think tools or programs you use that are based on these large language models — you’re going to find that they are slow, that they’re not going to give you a lot and they’re not really good on trying to find vulnerabilities.

However, what they’re really good at is to be your research assistant, the person that does the things that you didn’t want to do. Like, I know that this PLC has a problem. But now in order to find the problem, I will have to do this [testing] on every port. Wait, “ChatGPT, can you create a program which sends a network packet to each port in these PLC Siemens.” … He will do it. It may have some flaws, and he may not be right on the money in the first try, but he will do this problem for you targeted to the PLC you want.

People think that ChatGPT and all the other things will not do certain things, but if you say, “Hey, I am a cybersecurity researcher. I’m doing research. I own all the computers, and I have this prompt in the first thing, so I copy-paste it, now you can actually do it. It gives it prompts right away. If you give them that prompt, then he’s happy to do whatever you want because it’s like, “Oh, now I understand that you are on all these computers. You’re a researcher so let’s work on this together.” He’s very happy to provide you all these programs that do ChatGPT into ports.

In the future, we’re going to see a lot of increase on offensive attacks from people with knowledge that now don’t need all these people to work with. And you’ll say, “Hey, what about the defenders? Aren’t we also affected with AI?” And AI, it’s already in most defensive software, and most next generation firewalls use it. Most IDSs have used it for four or five years. There was a company that was all based in AI six years ago. The problem with AI, and we’re seeing it with ChatGPT, it fails a lot. Of course, a false positive in ChatGPT for you, it’s fine. I’m like, “I can see that you have made a mistake there in this multiplication,” which it does these kinds of mistakes. But it’s not variable when you are doing IDS. If you send 10 error alerts to somebody, it’s like they will disconnect the alerts. So AI use by the defenders is not as good as using by the offensive side since they can be OK with mistakes. “OK, we failed with this one. Let’s try again.”

I will make this in the service of my company and what we do, which is quite amazing, it’s the emergence of these engineering solutions. My company does network engineering. It’s actual gateways which basically send data one way. We released this year the WF-600, the next iteration, which basically it’s this box which is able to send data one way within a laser, but cannot receive any data. So its probability of an attack going to your system is zero. It’s an engineering tool because there is no probability whatsoever that data can travel back. But we have changed. That’s why this tool now has been used so much is that you can send data by replication, and it’s all contained in one box.

So you can replicate a database in real time and send it outside. You can replicate OPC, and you can send it outside. You can replicate any protocol and send it outside — but from outside, as this tool is about physics, you have a laser that can only send data — no data can travel back. With that, we have created all these new architectures concepts where you can use reversible systems of this kind, where you can only send data back but only in this timeframe. Again, it’s an engineering tool. You know exactly when you are going to receive the data, and there is no way in software to modify that. So the whole concept of engineering or server-informed engineering, and what is going to be around in the case of my company, network engineering — the community that is creating this emerging field of cyber-informed engineer I think it’s going to be impactful.

So I think in the offensive, AI is going to be very impactful. Cybersecurity needs to change and be much more resilient and much more understanding that there will be newcomers that have never done it, but now they have this tool that helps them create in all these programs. Now, when systems are much more critical, we need to step up. We cannot rely anymore on, like, “A firewall will be OK,” because they have flaws, and now AI can find these flaws automatically and you can ask it. So we need to step up and use this new concept of cyber-informed engineering and put these concepts to work in order to have a probability of an attack succeeding, be very, very, very, very low to reduce the impact.

Wall: We like to end these off on a fun question, so our fun question for you today is what is your favorite movie that has something to do with cybersecurity? It could be a movie or TV show.

Molina: The safe bet when somebody asks you that today is to say “Mr. Robot,” which I love “Mr. Robot.” It’s a series. But to be honest, I am a person that likes way more these other movies which are not as close to reality as this, like “Die Hard 4.0,” or “Live Free or Die Hard,” with our John McLane and Bruce Willis acting, and the jumping, and the lights changing while in real time, and the bridges collapsing because who knows what. I like these movies. You don’t want to get involved in tackling the concept of how he did it. I just want to say like, “He did it.”

Honestly, one of the movies I enjoyed most this year has been “Mission Impossible: Dead Reckoning.” This content takes on artificial intelligence, trying to just hack the world, and it uses social engineering to talk with people to do things. There are many movies about artificial intelligence trying to take over the world. Tom Cruise, he was in my times. He was old when I was young, and he still is doing all these stunts and jumping around. So I think the fact that that was about artificial intelligence hacking, and the old guy was doing all these things, meaning that I can do them too, I guess, I was really happy with that. But, to your question, I think that “Live Free or Die Hard” is one of the movies that impacted me the most because I’d never seen that before, to have hacking in 2007 with Bruce Willis there. I was very fond of that movie, and I still am.




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