Christophe Veltsos (@DrInfoSec) header
Christophe Veltsos (@DrInfoSec) profile picture

University prof. on cyber risk & systemic risk | He/him | Posts/RTs lots on #Covid #LongCovid. Covid is sig. systemic risk. #COVIDisAirborne #MaskUp #IAQ #AirQ

Joined November 2008
Photo by Christophe Veltsos (@DrInfoSec)Photo by Christophe Veltsos (@DrInfoSec)Photo by Christophe Veltsos (@DrInfoSec)Photo by Christophe Veltsos (@DrInfoSec)Photo by Christophe Veltsos (@DrInfoSec)Photo by Christophe Veltsos (@DrInfoSec)Photo by Christophe Veltsos (@DrInfoSec)Photo by Christophe Veltsos (@DrInfoSec)Photo by Christophe Veltsos (@DrInfoSec)Photo by Christophe Veltsos (@DrInfoSec)
Christophe Veltsos retweeted
An IMPORTANT question as AI takes over #healthcare.
🎯🧵One of the best thing I've read this week; it has deep implications: "What happens when artificial intelligence learns to operate the systems that hold human civilization together?..." 🧵 threadreaderapp.com/thread/2… Original 👇
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Christophe Veltsos retweeted
Applications close this Wednesday!
🔐 Ready to share your research? Submit a poster to #WiCyS2027 by Nov 4! Winners earn travel support for a security conference of their choice, and accepted lead presenters receive an automatic scholarship to attend. 🎓 Details: wicys.org/events/wicys-2027/…
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🔐 Ready to share your research? Submit a poster to #WiCyS2027 by Nov 4! Winners earn travel support for a security conference of their choice, and accepted lead presenters receive an automatic scholarship to attend. 🎓 Details: wicys.org/events/wicys-2027/…
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Christophe Veltsos retweeted
Brilliant. We are currently using AirSpots for our Illinois Air-Mapping Project. We’re working on automated data retrieval and real-time dashboards. We use ARIA as a companion app to conduct more comprehensive analyses about the environment relevant to each AirSpot-recorded air sampling. exercisetechlab.com/aria/
Testing out some AirSpots Slim prototypes. Credit card sized CO2 monitor on its way soon 😷🤞
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Christophe Veltsos retweeted
Doctors: these are the lengths that patients are going to in order to protect themselves from preventable hospital-acquired infections. If a patient asks you to wear an N95/FFP2 respirator, please respect their request.
I have to do more hospital stuff soon. Much anxiety. A lot of anxiety comes from running a gauntlet of unmasked healthcare workers. I am sad, because they are killing themselves. And I am angry, because they might kill me. Today I ordered 250 double sided business cards:
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Christophe Veltsos retweeted
How many times do we have to explain this? What part of your brain switched off and convinced you COVID just packed its bags and disappeared? When a magician shows you an empty top hat, do you genuinely believe the rabbit ceased to exist? COVID didn’t disappear. We stopped looking for it, stopped talking about it, and somehow confused silence with safety. Stop calling this a “post-COVID world.” We’re post-emergency declarations. Post-precautions. Post-giving-a-damn, apparently. But we are NOT post-COVID. The rabbit is still here. And at this point, I’m starting to think it’s the only one with object permanence. 🐇🎩
Replying to @TolentinoTeach
Nobody has taught in a classroom “post-Covid.” 🙄
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Christophe Veltsos retweeted
This October is on track to be the HOTTEST EVER on RECORD 2026 also had the hottest GLOBAL OCEAN TEMPERATURES ever recorded. What are we doing to slow this down ? Anything ?? scientificamerican.com/artic…
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Christophe Veltsos retweeted
Someone posts in “No Stupid Questions” asking why they keep getting sick with “flu and stuff” more often SINCE the Covid pandemic. They even stop to wonder if their memory is just failing them. The responses rush in to lock the new normal in place: “My most recent doctor, well she was pretty clear. I am just getting old. Damn it.” “Isolation nuked influenza so now it’s back. I know I’ve had Covid, but extremely minimal impact on me. I just get SEASONAL ALLERGIES.” “I had delta and omicron. The only illness I've had since was STOMACH BUGS and a few SEASONAL COLDS.” “Stress also impacts the immune system.” It’s never the virus that has been shown to mess with immune function. It’s always literally anything else.
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Christophe Veltsos retweeted
Testing out some AirSpots Slim prototypes. Credit card sized CO2 monitor on its way soon 😷🤞
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Christophe Veltsos retweeted
There is no post-Covid classroom. There is continuing to teach during a pandemic, and ignoring the impact of repeated infections on students and staff. The impact on attendance, performance and behavior was predicted and it's all come true.
If you haven’t taught in a classroom post-Covid, you don’t know what it is like to teach the modern student. The students have changed. Teaching has changed. You have to be in the classroom daily to understand what I mean.
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Christophe Veltsos retweeted
It's actually terrifying how quickly an employee can go from being considered an asset to being treated like a problem the moment they advocate for themselves.
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Many wonder how 😷 work if its pores are larger than a virus particle. Masks aren't a simple net. They trap particles using fiber collision, electrostatic charges, & Brownian diffusion, which forces tiny particles to drift randomly until they get stuck. science.org/doi/10.1126/scie…
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Christophe Veltsos retweeted
“If I can reduce my chance of bringing flu, COVID, RSV, or some other respiratory infection home……by putting on a KN95, that is a remarkably small inconvenience” Exactly this! We do so to protect our son from avoidable, traumatic A&E visits. Respirators work as risk reduction.
I still wear a KN95 every time I enter a healthcare facility. Not because I think masks are magical. Because hospitals, clinics, and nursing facilities are where coughing, febrile, immunocompromised, elderly, and recently infected people tend to congregate. And the data have not suddenly reversed. Well-fitting masks and respirators reduce exposure to respiratory particles. CDC still recommends their use as part of infection control, particularly during periods of high respiratory-virus activity and around high-risk patients. A respirator is not perfect protection. Neither is a seat belt. That has never been the standard. If I can reduce my chance of bringing influenza, COVID, RSV, or some other respiratory infection home — or carrying one from one vulnerable patient to another — by putting on a KN95, that is a remarkably small inconvenience. What did we learn from the pandemic? Among other things, respiratory viruses travel through the air, hospitals contain a lot of them, and filtration works. Apparently some people learned instead that fabric over the nose became a political identity.
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Christophe Veltsos retweeted
"I have been sick and tested positive for Covid 7 times this year." reddit.com/r/COVID19positive…
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Christophe Veltsos retweeted
Had two Halloween parties to attend this year. Had two Halloween costumes: A masked doctor and a masked unicorn. 🩺🦄 One is fictional. The other is apparently controversial 😷💀
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Christophe Veltsos retweeted
Protecting yourself from an airborne virus isn’t crazy. Mocking people for taking precautions isn’t edgy or clever. It’s ignorance, arrogance and a spectacular lack of empathy.
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🎯🧵One of the best thing I've read this week; it has deep implications: "What happens when artificial intelligence learns to operate the systems that hold human civilization together?..." 🧵 threadreaderapp.com/thread/2… Original 👇
What happens when artificial intelligence learns to operate the systems that hold human civilization together? Historian Yuval Noah Harari offers a fascinating perspective. For thousands of years, humans have used language to build institutions, coordinate societies, create laws, and establish trust between strangers. Now something other than humans is learning to operate those systems. Harari argues that this may represent a far greater transformation than we fully appreciate. Let’s explore his ideas, what the evidence supports, and what remains uncertain. A thread. 🧵
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Christophe Veltsos retweeted
October round-up. This month’s scribbles from the wayside. 🧵 Can you relate?
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Christophe Veltsos retweeted
Sam Altman thinks RAM sitting in personal computers is a waste when it could be put to better use in data centers. Weird. I was just thinking that all those billions sitting in billionaires’ bank accounts could be put to much better use in our communities.
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Christophe Veltsos retweeted
When I worked at OpenAI, I spent a lot of time thinking about AI safety and how to frame cyber risks. Should frontier labs focus on the acute and immediate harms posed by the technology, or should they prioritize potential existential risks? For cyber, this was a particularly interesting question because at the time, the models were not very good at vulnerability discovery or exploitation. However, they were very good at classification, organization, and contextualization of unstructured information. If you've worked with data dumps before, then you know what a mess they are. Normalizing different unstructured logs involving multiple people into something coherent is a difficult task. At the time, one of the most interesting questions was how to quantify the risks that emerge when seemingly mundane tasks like data parsing and summarization become dramatically easier to perform at scale. For me, the most compelling argument was that LLMs would dramatically increase the operational capabilities of threat actors. A concrete example is victim triage, where an adversary could use an LLM to determine how valuable a given victim was for continued exploitation. Sure they had already gained some form of access, but think about this practically - adversaries don't pursue every machine they have access to. As @MalwareTechBlog said the other day, "Life is a lot easier once you stop seeing threat actors as hackers... and start seeing them as businesses". Adversaries are drowning in access, they don't have unlimited time or budget and they don't want to waste either on a target that isn't going to get them paid. The ability to quickly identify the most lucrative or interesting targets from an enormous amount of stolen, messy data is important. LLMs enable that. Which brings us to VOLTA-AUTODOXER. What Talos describes here is remarkably close to that scenario. The malware collects victim information, enriches it using stolen sessions, then hands the resulting evidence to an LLM to produce a structured assessment of the victim, including what they're worth, their access, and their security posture. With all the recent craziness this past month, its worth taking a beat to note that the risks posed by LLMs are not exclusively vulnerability identification or exploitation. Honestly I am a bit surprised it took this long to come across such a clear example of this in the wild. h/t to the Cisco Talos team and @iknowuhack. This is a great find, and hopefully the beginning of a broader effort to hunt for this kind of activity. blog.talosintelligence.com/a…
infostealer system prompt
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