
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
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Christophe Veltsos retweeted
Hey hey - look at this!! A WHO org advocating for community members to wear N95s - or N99s!!
Way to go!!
Air pollution 🌫️ can harm your health. Take steps to reduce your exposure!
🏠 Stay indoors as much as possible
🏃 Avoid outdoor events, walking or jogging on high pollution days
😷 Wear N95 or N99 masks when outdoors
🚌 Use public transport to travel
🧹 Use a wet mop to clean
🔥 Do not burn leaves, garbage, incense sticks, etc.
Stay informed about local air quality and follow health advisories.
#AirPollution #CleanAir #HealthForAll
Christophe Veltsos retweeted
Wow! Big news today!
Soon Discord messages will be indexable on Google. If you're in a public Discord which is discoverable, and has not changed its privacy settings, any messages posted moving forward can be found from search engines!
Hooray!!!!!1 (I think this is very bad)
Christophe Veltsos retweeted
"colorectal cancers more than quadrupled among teens 15 to 19, and doubled in young adults aged 20 to 24"
This isn't a headline from the early days of the AIDS epidemic, this is America stuffing their head up their ass in 2026.
#LongCOVID is #AirborneAIDS so #WearN95
Colorectal cancer is surging in an unexpected group - and it's 'developing differently' trib.al/xwaIW0U
Christophe Veltsos retweeted
COVID-19 circulates year-round, and surges can happen at any time. Prevention shouldn't be limited to periods of increased transmission.
Whether you're trying to avoid infection or prevent spreading COVID-19 to others, taking precautions matters.
Wearing a well-fitting respirator, improving indoor air quality, and staying home when sick can help reduce transmission and protect our communities.
#COVID #COVID19 #LongCOVID #PublicHealth #InfectionPrevention
Christophe Veltsos retweeted
Normally @UKHSA when the graph exceeds the top of the axis, you increase the axis.
RE: awareness of damage from ongoing Covid infections:
Cognitive dissonance is a challenging condition to resolve. Yet it's also a sign -- for those who can still process those signs -- that one's mental model of the world is either incomplete or needing review/recalibration.
Christophe Veltsos retweeted
No Long COVID prevalence, disability, research/treatment milestones, or actual access to care measures.
Once again, we’ve acknowledged the disease and forgotten to measure whether the patients are getting better.
Incredible work, everyone.
Please comment.
WHO invites public comment on the draft monitoring, evaluation and learning (MEL) framework accompanying its Strategic plan for coronavirus disease threat management, covering #COVID19, #MERS and novel coronavirus diseases.
We invite Member States, partners, researchers, civil society and others to comment on the approach, indicators, data sources and feasibility across different contexts.
Deadline for comments: 13 November 2026, 23:59 CET
Learn more: bit.ly/3WbSB6v
Christophe Veltsos retweeted
A quick reminder of the beauty of circular financing.... I doubt there has ever been this level of dependence in the US market, as we're seeing among the AI companies today.
Bloomberg does a great job with this chart.
🎯👇"This is the part that still bothers me. It is not the denial exactly. It is how denial and recognition can live within the same person at the same time.
She could say Covid when it belonged to the past..."
After class this morning one of my regulars told me she was going to visit her friend, who was sitting in the ICU with a 36 y/o who has lived with severe cerebral palsy his entire life.
She said it clearly and only once.
"Both of his parents died from COVID 5 years ago."
Her friend was the godmother, so she took him in.
Then almost in the same breath she said, "He recently came down with the FLU, and started vomiting, and because of his cerebral palsy he aspirated and developed pneumonia and sepsis.”
I stood there in my sweaty teaching clothes and watched a window open in her eyes to a deeper connection.
Those eyes suddenly filled heavy with tears. She wiped at them with the heel of her hand, then again, and again. The tears opened a brief, clear window past the word "flu" she kept using and through to the deeper reality of what had already taken his parents.
She kept talking through that reality though, voice catching. "The whole situation is so sad. The poor guy never had a chance once the vomiting started, because he can't swallow with the cerebral palsy."
I thought the next wipe of her hand might come with the real name of what had already taken both of his parents, and has now returned inside that ICU, knocking hard on the door for their son.
The tears kept coming, steady and moved by the story she was telling me. It was the kind of crying that starts once something deeper has already been understood, and the mind is only beginning to catch up.
The word "flu" stayed where she left it, hanging suspended between us.
She never reached back for it, and did not say that word again.
This is the part that still bothers me. It is not the denial exactly. It is how denial and recognition can live within the same person at the same time.
She could say Covid when it belonged to the past, to the two already gone and buried. She could not say it in the present, while the same thing returned for their son, as if the first deaths had only been the beginning.
The word stayed buried with them. What she would not speak came out of her eyes instead.
This is the shape of the world now.
The outline of what remains is still felt on a deep subconscious knowing, and a softer word is offered in its place, so the crying can continue without having to confess what the eyes already know.
Christophe Veltsos retweeted
My manager started our team meeting this week with ‘sick rates are really up’ wondering is stress is contributing.. the team agreed they weren’t stressed… I log it weekly and have done for years. I’m the only one with a mask and called in a sick day for 6 years
🎯👇🚨
There’s only one other time I’ve seen the market this complacent in the face of an imminent, systemic risk. And I’m having déjà vu, because the risk around AI related cybersecurity has the same shape and setup as the pandemic risk in early 2020. Though it’s arguably worse.
Bearish market calls are a dime a dozen. But my threshold for making a public bearish call is extremely high. I’ve only done it once before…Feb 2020, weeks before the market fell 35% in a month.
By early Feb 2020 it was already clear to anyone paying attention that COVID was going to be a global pandemic. We had access to a lot of experts, and they were unanimous in their belief that a global pandemic was inevitable. And yet the public and the market treated it like another Ebola or SARS headline. When I warned people to prepare, I was told that we couldn’t have a global pandemic in this day and age. Today, people have the same difficulty imagining that the internet could become unusable. It’s so fundamental to how we live that its continued functioning is treated as a given.
In 2020, the market didn’t discount this risk until the evidence hit them right in the face. So the adjustment was violent and nearly instant.
In modern markets big tops are typically a process. They don’t tend to crash from all time highs. Economic data slows, breadth narrows, credit widens, etc. The market takes the signal piece by piece and distributes over months. But this one fell out of a clear sky, because an exogenous shock doesn't have to generate those kinds of signals in advance.
Quantitative models are good at extrapolating signals that have paid off in the past. That has increasingly become the backbone of financial markets, as well as betting and prediction markets. You can model a football game, or the weather based on data. But if a novel risk hasn’t shown up in the signals a model tracks, it doesn’t just estimate the odds poorly, it may not represent the risk at all. That’s why the market could sit at an ATH high in Feb 2020, with a catastrophe weeks away.
And its why the market currently sitting near an ATH doesn’t give me much reassurance. For a legible, datable risk it can discount ahead of time. It bids up vol into an election or a Fed meeting. But it struggles to price a novel exogenous tail because it has no reference class and no event date. It stays silent, right up until the repricing.
Today the cyber experts agree on the direction the way the epidemiologists did in February 2020. AI cyber capabilities now pose a risk to our entire digital system. And every day we get more evidence that we are nearing a tipping point. Our economy and livelihoods run on that system. The tail risk is a collapse, and its fatter than the market is pricing. I believe serious disruption is now a foregone conclusion, and only the magnitude and timing are still in question.
The market may wake up to this risk because of a single event that impacts the public in a visceral way, but that won’t be the underlying problem. That’ll just make it clear that the rules have changed. This is a paradigm shift in what attackers can do and how many systems they can target.
And like in 2020, the market can recognize the most obvious exposures without grasping how far the damage could spread. In the weeks before the 2020 crash the market did lightly discount the most direct, first order pandemic trades. The cruise lines, the airlines, a handful of others. But the fallout was never going to be contained to those names.
You can argue that the market is already discounting some risk, as the AI related trade has come under strain, credit markets are tightening, and there are other red flags under the hood. It’s hard to differentiate how much of that is due to cyber risks (and its second order implications), rather than fears over capex sustainability, large capital needs, valuations, etc. but the important point is that the market as a whole is still not pricing the scale of the risk.
Since the market tends not to slowly discount this type of risk, it means you can’t wait for confirmation. The opportunity is to position before the market recognizes what’s already qualitatively visible to experts. Which is what worked in February 2020.
But this isn’t an argument for fatalism, because the setup gives us an opportunity. Protection against an unpriced tail costs very little, because no one is bidding it. If the event never comes, you’re out a small premium. If it comes, you get paid from an undiscounted base, which is where the largest repricings in history come from.
That asymmetry means you only have to notice that the price of the insurance is cheap relative to the payoff.
I should say that the risk to this strategy is timing. A cheap convex bet is cheap per unit time but if that event takes longer then you can get eaten up by the carry. I think the timing of the market realization has now approached the point where my own qualitative analysis suggests that it is appropriate to take steps to protect your portfolio. But explaining the reasoning behind that assessment would take pages.
This isn’t financial advice. You should decide for yourself. I’m just making my own thoughts and logic public for anyone who cares how I am thinking at the moment.
I've never hoped more that I'm wrong.
Christophe Veltsos retweeted
Replying to @fillthewhole
My GP surgery actually has a poster up, requesting patients to wear masks now.
But not a single member of staff were masked, so patients have no role model.
I was still the ONLY masked person in the whole building.
My appt was cancelled due to staff sickness, by the way.🙄
Christophe Veltsos retweeted
10,000 cases of Ebola
Already
Contact Tracing doesn't work at this level
80% of cases are unknown to contact tracers
Community involvement - education, supplies, support - is the only thing that can stop this runaway freight train
Ebola outbreak in Congo has reached 10,000 confirmed cases, government data showed Tuesday, as health authorities race to slow the spread of the disease in multiple African countries. apnews.com/article/ebola-dis…
🎯🎯🎯👇
🚨 To protect humans over the next few years, we'll need to RETHINK the economy, labor rules, the tax system, and social incentives.
Governments should immediately start planning:
- Human-only job categories
- Layoff limitations
- Comprehensive reskilling programs
- Career-transition assistance
- AI deployment taxes
- Universal Basic Income
- Mental health support
- AI-funded essential services
- AI productivity dividends
- 'Minimum human interaction' rights
- Special funds for human-made products
- And more.
It worries me that most governments seem reluctant to start these discussions. I guess they're afraid of public backlash.
The train has already left the station, and doing nothing will be worse for society.
Pretending the problem isn't there will not make it disappear.
The only places I have seen seriously discussing this are California, China, Singapore, and South Korea.
It also bothers me that AI labs and tech companies are not pushing these discussions more actively.
They know it's coming, and they know very well how bad it will be without proactive organization.
These preparation policies should start being implemented NOW.
I'll write more about it in my newsletter.
Christophe Veltsos retweeted
For anyone getting into biology, please consider taking airborne disease resistance more seriously.
It's a super important area of medicine that is a huge cause of death and sickness but easily gets forgotten. We're likely to get many more airborne plagues in the future due to the combination of not just extremely dense and interconnected society (including city and farm animals), but also accidents from bio research and offensive biotech (both from random people and from secret government programs that can easily get themselves exempted from safety restrictions), all enhanced by powerful AI.
Right now, this area is getting way less love than longevity research (which continues to be super important!), but it's an area where there are lots of unclaimed wins that we know exactly how to do (but are not yet doing) with present-day tech:
* early detection
* passive universal testing
* filtration/ventilation/UVC
* better vaccines (including making them open source and open science)
* cryptography to make all of the above privacy-preserving
We can have China-level pandemic resistance with Sweden-level limited intrusion into people's lives, and then go even further. We just have to actually do the work for it.
Christophe Veltsos retweeted
I very much want to be wrong, but I think this outbreak is going to get much, much worse. Attacks on healthcare workers, active conflict zone, porous borders, sub-optimal surveillance. A very bad combination.
Ebola outbreak in Congo has reached 10,000 confirmed cases, government data showed Tuesday, as health authorities race to slow the spread of the disease in multiple African countries. apnews.com/article/ebola-dis…
Christophe Veltsos retweeted
CO2 sensor in a public place. An airplane, a library, a restaurant, a supermarket, a medical waiting room or other. `
No possibility of placing it 1 m from you or another person.
Where would you place it if you have the choice between your yoga pants, on a wristband, or in an open handbag, if you want to have the most accurate CO2 data?
Which of these 3 possibilities in your opinion overestimates or underestimates the CO2, according to you?
I have finished tests with CO2 sensors, 8 models that are compared to Aranet 4 used as a reference value. Humble open science, nothing very elaborate.
I would like to read your thought before I share the results
I don't want to say any more so as not to influence your answers
Christophe Veltsos retweeted
68% of my students absent today. Covid rates in my area “very high.” There is also a surge of early flu cases, according to county public health!
Multiple students emailed me to let me know they are sick, or their dependents are sick so they are staying home to care for them. 😬
Christophe Veltsos retweeted
I still receive many requests asking for the noise at the air purifier’s highest setting to be lower. Although I’ve said this several times, I need to repeat it so that more people can see it:
1. If you want the maximum-speed CADR without the maximum-speed noise, it’s simple: use multiple units. For example, running one unit at 100% gives 379 CFM at 53 dB. Running two 5Pros at 50% gives 388 CFM at 45 dB. Running three 5Pros at 35% gives 387 CFM at 39 dB.
2. It may sound counterintuitive, but room air purifiers should be loud at maximum speed. This is because some people, at certain times, need the high CADR that comes with that high noise level. A good air purifier should offer a wide range of fan speeds so consumers can choose the speed that suits them. Even if the fan itself is very quiet, we still have to push its maximum speed to the point where it is noticeably loud, so that its operating range is wide enough to suit different people and scenarios.
air-fanta.com/blogs/all/is-t…
Gisteren verscheen er een stukje in Men's Health @MensHealthMag over ons onderzoek, en waarom ook profatleten long covid kunnen ontwikkelen (en hoe je het kunt onderscheiden van overtraining/gewone vermoeidheid):
menshealth.nl/nieuws/wat-is-…
#coverboy :)
































