What is Hackers' Pub?

Hackers' Pub is a place for software engineers to share their knowledge and experience with each other. It's also an ActivityPub-enabled social network, so you can follow your favorite hackers in the fediverse and get their latest posts in your feed.

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Sovereign Tech Agency @sovtechfund@mastodon.social
Public

Today in The Hague, the ’s official launch is taking place—a consortium designed to strengthen Europe’s shared capacity to develop, maintain, and scale essential digital infrastructure.

We have been engaged in the effort from its earliest stages, contributing experience in building structures that sustain open, interoperable technologies. Our managing director, Adriana Groh, spoke at today’s event on the panel “Future Strategies for the Digital Commons EDIC.”

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At the launch of the Digital Commons EDIC in the Hague, around a dozen people are standing in an ornate room cheering. Both they and many members of the audience are holding brightly colored balloons, while many others in a video call are projected on a screen above their heads.
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Miguel Afonso Caetano @remixtures@tldr.nettime.org
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Shared by Fullmetal Alejandro

"On a Thursday in early September, more than 40 strangers logged in to Instacart, the grocery-shopping app, to buy eggs and test a hypothesis.

Connected by videoconference, they simultaneously selected the same store — a Safeway in Washington, D.C. — and the same brand of eggs. They all chose pickup rather than delivery.

The only difference was the price they were offered: $3.99 for a couple of lucky shoppers. $4.59 or $4.69 for others. And a few saw a price of $4.79 — 20 percent more than some others, for the exact same product.

The shoppers were volunteers, participating in a study published on Tuesday and organized by the Groundwork Collaborative, a progressive policy group, and Consumer Reports, a nonprofit consumer publication. In tests in four cities across the country, nearly 200 volunteers checked prices on 20 grocery items on Instacart.

On item after item, they found significant differences. In a Target in North Canton, Ohio, some shoppers were charged $3.59 for a jar of Skippy peanut butter that others could get for $2.99. At a Safeway in Seattle, some people paid $3.99 for a box of Wheat Thins while others paid $4.89. And at a Target in St. Paul, Minn., some people were charged $4.59 for a box of Cheerios that others could get for $3.99.

“Two shoppers who are buying the exact same item from the exact same store at the exact same time are getting different prices,” said Lindsay Owens, executive director of the Groundwork Collaborative. “The data really backs up how extraordinarily pervasive this is.”
(...)
Groundwork’s findings are the latest example of how the notion of a single price, offered to all customers for a predictable period, is breaking down in the digital age. Companies are using sophisticated algorithms to adjust prices quickly in response to competitors’ offers and consumer behavior."

nytimes.com/2025/12/09/busines

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Hacker News 50 @hn50@social.lansky.name
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A Developer Accidentally Found CSAM in AI Data. Google Banned Him for It

Link: 404media.co/a-developer-accide
Discussion: news.ycombinator.com/item?id=4

A Developer Accidentally Found CSAM in AI Data. Google Banned Him For It

Mark Russo reported the dataset to all the right organizations, but still couldn't get into his accounts for months.

www.404media.co · 404 Media

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Open Rights Group @openrightsgroup@social.openrightsgroup.org
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Facial recognition is biased. The police know it. The UK Home Office knows it. And they don't care.

This dangerous, intrusive tech produces more false positives for women, young people and members of ethnic minority groups.

We need Parliamentary scrutiny now!

theguardian.com/technology/202

UK police forces lobbied to use biased facial recognition technology

Exclusive: System more likely to suggest incorrect matches for images of women and Black people

www.theguardian.com · the Guardian

Open Rights Group @openrightsgroup@social.openrightsgroup.org
Public
Shared by Em :official_verified:

Facial recognition not only harms people right now, but feeds into’ crime-predicting’ tech that turbo charges existing bias.

Sign our petition to ban Predictive Policing in the UK to push back on this dystopian vision of a fully monitored Pre-Crime future.

Act now ⬇️

you.38degrees.org.uk/petitions

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Open Rights Group @openrightsgroup@social.openrightsgroup.org
Public
Shared by Em :official_verified:

Facial recognition is biased. The police know it. The UK Home Office knows it. And they don't care.

This dangerous, intrusive tech produces more false positives for women, young people and members of ethnic minority groups.

We need Parliamentary scrutiny now!

theguardian.com/technology/202

UK police forces lobbied to use biased facial recognition technology

Exclusive: System more likely to suggest incorrect matches for images of women and Black people

www.theguardian.com · the Guardian

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The New Oil @thenewoil@mastodon.thenewoil.org
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Shared by Em :official_verified:

’s rolls out controversial, -powered feature to video doorbells

techcrunch.com/2025/12/09/amaz

Amazon's Ring rolls out controversial, AI-powered facial-recognition feature to video doorbells | TechCrunch

The feature lets you identify the people who regularly come to your door by creating a catalog of up to 50 faces. The company says the Ring feature is opt in and the biometric data isn't used to train AI models.

techcrunch.com · TechCrunch

Link author: Sarah Perez 💙@Sarahp@mastodon.social

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Cat Hicks @grimalkina@mastodon.social
Public

I don't blame people for repeating the things that they've been told via the credibility that's so baked into society, e.g. work from computer science faculty, from a university campus. It does enrage me that these fields have not cared to have a higher bar of rigor here -- but I don't blame the READERS of this work. Not to be dramatic but we are living in societies with soul-shattering heritages of violence against human potential trying to find a reasonable path through its devastation

Cat Hicks @grimalkina@mastodon.social
Public
Shared by Jim DeLaHunt

But I do think we have some responsibility to catch up. Update. Correct. And for god's sake pay attention to what you amplify, who you give constant platforms to and constantly indulge and constantly repeat and constantly provide more visibility to, and who you don't.

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CryptPad @CryptPad@xwiki.com
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Shared by Em :official_verified:

🔐 Did CryptPad help you this year?

Millions of documents were written and shared on CryptPad this year, all encrypted on the user’s device.

If every active user gave 5 EUR in December, the project could be funded for all of 2026 without external grants.

If you want to support private, open-source collaboration, you can donate here:
👉 opencollective.com/cryptpad

Thank you to everyone who already supports us 💚.

CryptPad - Open Collective

Collaborative suite, end-to-end encrypted and open-source. Made at XWiki.

opencollective.com

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Cat Hicks @grimalkina@mastodon.social
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Reflecting on the exchange between academic papers and people who want to earnestly write software pieces about this: you have been failed too. You aren't assessment scientists or psychologists. You're reading things that are so tangled up in context and just getting little pieces and edges and slices of the picture. I mean I have spent many, many years as a PhD psychologist thinking about ability and achievement and working on this stuff. Software needs this expertise but won't value it

Cat Hicks @grimalkina@mastodon.social
Public
Shared by Jim DeLaHunt

I don't blame people for repeating the things that they've been told via the credibility that's so baked into society, e.g. work from computer science faculty, from a university campus. It does enrage me that these fields have not cared to have a higher bar of rigor here -- but I don't blame the READERS of this work. Not to be dramatic but we are living in societies with soul-shattering heritages of violence against human potential trying to find a reasonable path through its devastation

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Em :official_verified: @Em0nM4stodon@infosec.exchange
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You can refuse to provide official ID or biometric data for social media accounts requiring age verification.

Actually, I bet if everyone did refuse, and let their account dormant for a couple of weeks, you would suddenly see American Big Tech transforming into the fiercest defender of your privacy rights, using their powerful network of lobbyists to fight these invasive government regulations.

They need you more than you need them.
Force them to work for your rights.
Do not comply.

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Fedi.Tips @FediTips@social.growyourown.services
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You can pin posts to your Mastodon profile if you are using Mastodon's web interface, Mastodon's web app or a third party Mastodon app:

1. Go to one of your posts which you want to pin
2. Click ⋯ on that post
3. Select "Pin"

You can unpin a post by repeating this but selecting "Unpin".

Lots more info about pinning posts on Mastodon at fedi.tips/how-do-i-pin-my-post

The lack of a "Pin" option on the official apps is yet another reason to switch to an alternative: fedi.tips/which-apps-can-i-use

Illustration of a stylised fox wearing a christmas hat opening a treasure chest. Inside the chest are icons of various Fediverse services including Mastodon, Pixelfed and PeerTube as well as the overall Fediverse logo.

How do I pin posts on my Mastodon profile? | Fedi.Tips – An Unofficial Guide to Mastodon and the Fediverse

An unofficial guide to using Mastodon and the Fediverse

fedi.tips

Link author: Fedi.Tips@FediTips@social.growyourown.services

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Miakoda @hellomiakoda@pdx.social
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This present day landscape is just crap in even the tiniest ways. Years ago, I wouldn't have hesitated to wear representation of my interests. Whatever IP I'm in to on a shirt, or whatever...
But now it's "Do I want to advertise that?" and wondering if tomorrow the people who make/sell it do fascist shit.
I hate that you can't simply enjoy something for what it is. My anger about it is pointed at those who capitulate with or support the fascists.

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Andrew @andrew_ecologyathome@mastodon.social
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Shared by earthling

Rare news of good viruses: soil viruses could be key to the carbon flux of wetlands. Article links to open access paper. phys.org/news/2025-12-viruses-

Viruses found in carbon-storing wetlands play an active role in shaping ecosystem health

Viruses in wetland soil play a more important role than previously understood and could even be indicators of ecosystem health, according to a new study by researchers from the University of Wisconsin–Madison. Recently published in Nature Microbiology, the study examined viruses in peatlands, which are wetlands that act as vital carbon sinks around the globe.

phys.org

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Ninja Birdy in 🇺🇸 @ninabreznik@chaos.social
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Shared by Darius Kazemi

Really happy to meet @dariusDarius Kazemi today and got inspired to listen to his latest public conversation together with @kissaneErin Kissane on the future of social internet and the role of the activity pub and other fellow travellers (other project solving same issues in a bit different way (like @dat_ecosystem, BlueSky, and others)). This linked discussion also touched on fediverse server runners and honestly many interesting topics, so I really recommend it to anyone who hasn't seen it yet youtu.be/izDHH_Eew6w?si=JH5XFa

Making Better Networks for Humans, with Erin Kissane and Darius Kazemi

Unlike traditional social media, the fediverse operates without a central authority. This creates a unique set of challenges and opportunities for how it’s g...

www.youtube.com · YouTube

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Andrew @andrew_ecologyathome@mastodon.social
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Rare news of good viruses: soil viruses could be key to the carbon flux of wetlands. Article links to open access paper. phys.org/news/2025-12-viruses-

Viruses found in carbon-storing wetlands play an active role in shaping ecosystem health

Viruses in wetland soil play a more important role than previously understood and could even be indicators of ecosystem health, according to a new study by researchers from the University of Wisconsin–Madison. Recently published in Nature Microbiology, the study examined viruses in peatlands, which are wetlands that act as vital carbon sinks around the globe.

phys.org

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Cycling Nomads @Cyclingnomads@f.cz
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Shared by Chao-c'

Just 4 km from Albarracín, the Prado del Navazo Trail leads to one of the most unique prehistoric rock-art sites in the Pinares de Rodeno. Here you’ll find one of the best collections of Levantine prehistoric art on the Iberian Peninsula, recognized as UNESCO World Heritage in 1998 as part of the Rock Art of the Mediterranean Basin. Among its most remarkable examples are the White Bulls of Prado del Navazo—large, white-painted animal figures (mostly bulls and horses) dating back to the Neolithic period (around 7000–5000 BC). The site is exceptional for its exclusive use of white pigment, which contrasts strikingly with the reddish sandstone walls, and it also features later schematic archer figures that depict ancient hunting tactics.

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