David Penfold 

@davep@infosec.exchange
2K Followers
264 Following
22.8K Posts

Does IT stuff. Vegan and anarchism curious.

Likes permaculture, infosec, Tranmere Rovers. But mainly bad jokes stolen from https://www.justthetalk.co.uk/thehaven/17468/urgent-i-need-a-good-joke-right-now

Also unreasonably fond of BPMN.

Officially not right in the noggin #ʘ‿ʘ

likewhatever
SignalDave.14
CO2 ppm at birth321.37
LinkedInAHAHAHAHA
cr: @IrenaBuzarewicz

"Scientists often estimate population size by looking at genetic diversity. In general, more variation in the genome suggests a larger group. But when Akey’s team applied their tool, IBDmix, they found that much of the apparent diversity in #Neanderthal DNA actually came from genes inherited from modern humans, who had far larger populations. With this new insight, scientists lowered their estimate of the Neanderthal breeding population from about 3,400 individuals to roughly 2,400.Taken together, these findings help explain how Neanderthals disappeared from the fossil and genetic record around 30,000 years ago.

"I don't like to say 'extinction,' because I think Neanderthals were largely absorbed," said Akey. His idea is that Neanderthal populations slowly shrank until the last survivors were folded into modern human communities.…"
https://www.sciencedaily.com/releases/2025/07/250713032519.htm

Princeton study maps 200,000 years of Human–Neanderthal interbreeding

For centuries, we’ve imagined Neanderthals as distant cousins — a separate species that vanished long ago. But thanks to AI-powered genetic research, scientists have revealed a far more entangled history. Modern humans and Neanderthals didn’t just cross paths; they repeatedly interbred, shared genes, and even merged populations over nearly 250,000 years. These revelations suggest that Neanderthals never truly disappeared — they were absorbed. Their legacy lives on in our DNA, reshaping our understanding of what it means to be human.

ScienceDaily

This is fun. Google Gemini’s “Summarize email” function is vulnerable to invisible prompt injection utilized to deceive users, including with fake security alerts.

#infosec #cybersecurity #blueteam

https://0din.ai/blog/phishing-for-gemini

The GenAI Bug Bounty Program

We are building for the next generation in GenAI security and beyond.

0din.ai

ever since i got covid in september, i've been getting knock-me-on-my-ass sick every. fucking. month. covid/flu/rsv tests have been negative each time i test, so i'm getting beaten up by common cold type shit that rarely got me before.

i never stopped masking (quality n95+), i haven't flown in nearly 2 years and avoid indoor crowds as much as i reasonably can, always prefer restaurants with outdoor seating, etc etc etc.

i don't have any long covid symptoms that i'm aware of, but the immune system reset thing is no joke. seems like mine got fucking obliterated. if anybody has tips for getting through this, i'm all ears.

#COVID #CovidIsNotOver #MaskUp #LongCovid

When you sell a house, you should have the legal right to an annual tour to see what choices the new owners have made and mercilessly criticize them
Columbia cancelled my class on race and media. I decided to build my own school instead. 500+ students. And more than 3,100 in the waitlist. Class starts tomorrow. We MOVE✊🏾 karenattiah.substack.com/p/sunday-not...
Thought I was having a stroke, but it turns out I was just reading a toot written in Dutch

"Some species of fig trees store calcium carbonate in their trunks – essentially turning themselves (partially) into stone, new research has found. The team of Kenyan, U.S., Austrian, and Swiss scientists found that the trees could draw carbon dioxide (CO2) from the atmosphere and store it as calcium carbonate ‘rocks’ in the surrounding soil.

"The research is being presented this week at the Goldschmidt conference in Prague.

"The trees – native to Kenya – are one of the first fruit trees shown to have this ability, known as the oxalate carbonate pathway…"
https://www.sciencedaily.com/releases/2025/07/250706225819.htm

From air to stone: The fig trees fighting climate change

Kenyan fig trees can literally turn parts of themselves to stone, using microbes to convert internal crystals into limestone-like deposits that lock away carbon, sweeten surrounding soils, and still yield fruit—hinting at a delicious new weapon in the climate-change arsenal.

ScienceDaily
Meanwhile, in Valhalla...
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Another nice nostalgic mischaracterization of history.

First, with respect to War Crimes, the UN and most international human rights organizations have a consensus that Israel is guilty of War Crimes and Genocide. However, the most powerful European nations, and the U.S., by virtue of their weaponry, and their economic and political power, get the de facto ultimate say. And they never call it a war crime when its not in their interests.

Second, with respect to protest, totalitarian states never allow any protests. Democracies do, but only to the extent that they don't threaten profits, and the power of the ruling class. As soon as they seem to be gaining mass support, threatening profits, making things uncomfortable for the bosses and politicians, they get shut down, often violently. This was true in the 1960s, 1980s, 1990s and today.

@MikeDunnAuthor People really need to learn, know, and FEEL that "illegal" does not mean "always applied every time someone does it, and the same way regardless of who they are."

@MikeDunnAuthor

You might want to brush up on recent British news about protest rights and consider understanding what is being alluded to before pontificating.

Hope this helps.

@jonhendry

Yes, things just got a lot worse in the UK, just like things have gotten a lot worse in the U.S. But we never had absolute free speech or protest in either country.

Consider the following examples from Britain: Chartists were killed and imprisoned for demonstrating for the right to vote. Suffragettes, too. How about the 1887 Bloody Sunday protests against unemployment, violently suppressed by the cops? How about Peterloo (1819), when cops and soldiers killed 18, and injured hundreds, who were peacefully demonstrating for the vote? Or, more recently, the Poll Tax riots (1990). Or all the scores of workers imprisoned or murdered by cops in the fight for better wages and working conditions?

My point was never to suggest that things aren't bad, unfair, undemocratic, repressive. Nor that they haven't gotten significantly worse in our lifetimes, in the past year. They most certainly have. Totalitarianism, fascism, are spreading rapidly throughout the world, including in both our countries.

Rather, my point was to remind people that rights are always something that must be fought for and defended, that they can always be taken away by those in power, and that this struggle for rights and freedoms has been going on for a long time.