LLMs can unmask pseudonymous users at scale with surprising accuracy
Pseudonymity has never been perfect for preserving privacy. Soon it may be pointless.
Dan Goodin
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221
Biz & IT // Informed technology
Google quantum-proofs HTTPS by squeezing 15kB of data into 700-byte space
Merkle Tree Certificate support is already in Chrome. Soon, it will be everywhere.
Dan Goodin
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95
New AirSnitch attack bypasses Wi-Fi encryption in homes, offices, and enterprises
That guest network you set up for your neighbors may not be as secure as you think.
Dan Goodin
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167
Password managers’ promise that they can’t see your vaults isn’t always true
Contrary to what password managers say, a server compromise can mean game over.
Dan Goodin
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168
Most VMware users still “actively reducing their VMware footprint,” survey finds
Broadcom’s “strategy was never to keep every customer,” CloudBolt report says.
Scharon Harding
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88
Retraction: After a routine code rejection, an AI agent published a hit piece on someone by name
This story has been retracted
Ars Staff
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1
OpenAI sidesteps Nvidia with unusually fast coding model on plate-sized chips
OpenAI’s new GPT‑5.3‑Codex‑Spark is 15 times faster at coding than its predecessor.
Benj Edwards
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110
Attackers prompted Gemini over 100,000 times while trying to clone it, Google says
Distillation technique lets copycats mimic Gemini at a fraction of the development cost.
Benj Edwards
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52
Most Read
Once-hobbled Lumma Stealer is back with lures that are hard to resist
ClickFix bait, combined with advanced Castleloader malware, is installing Lumma “at scale.”
Dan Goodin
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20
OpenAI researcher quits over ChatGPT ads, warns of “Facebook” path
Zoë Hitzig resigned on the same day OpenAI began testing ads in its chatbot.
Benj Edwards
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84
Sixteen Claude AI agents working together created a new C compiler
The $20,000 experiment compiled a Linux kernel but needed deep human management.
Benj Edwards
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226
Malicious packages for dYdX cryptocurrency exchange empties user wallets
Incident is at least the third time the exchange has been targeted by thieves.
Dan Goodin
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35
AI companies want you to stop chatting with bots and start managing them
Claude Opus 4.6 and OpenAI Frontier pitch a future of supervising AI agents.
Benj Edwards
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142
OpenAI is hoppin’ mad about Anthropic’s new Super Bowl TV ads
Sam Altman calls AI competitor “dishonest” and “authoritarian” in lengthy post on X.
Benj Edwards
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155
Increase of AI bots on the Internet sparks arms race
Publishers are rolling out more aggressive defenses.
WIRED
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55
Microsoft releases urgent Office patch. Russian-state hackers pounce.
The window to patch vulnerabilities is shrinking rapidly.
Dan Goodin
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77
Should AI chatbots have ads? Anthropic says no.
ChatGPT competitor comes out swinging with Super Bowl ad mocking AI product pitches.
Benj Edwards
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73
So yeah, I vibe-coded a log colorizer—and I feel good about it
Some semi-unhinged musings on where LLMs fit into my life—and how I’ll keep using them.
Lee Hutchinson
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275
Nvidia’s $100 billion OpenAI deal has seemingly vanished
Two AI giants shake market confidence after investment fails to materialize.
Benj Edwards
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261
The rise of Moltbook suggests viral AI prompts may be the next big security threat
We don’t need self-replicating AI models to have problems, just self-replicating prompts.
Benj Edwards
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116
Notepad++ users take note: It’s time to check if you’re hacked
Suspected China-state hackers used update infrastructure to deliver backdoored version.
Dan Goodin
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113
AI agents now have their own Reddit-style social network, and it’s getting weird fast
Moltbook lets 32,000 AI bots trade jokes, tips, and complaints about humans.
Benj Edwards
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232
Developers say AI coding tools work—and that’s precisely what worries them
Ars spoke to several software devs about AI and found enthusiasm tempered by unease.
Benj Edwards
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215
County pays $600,000 to pentesters it arrested for assessing courthouse security
Settlement comes more than 6 years after Gary DeMercurio and Justin Wynn’s ordeal began.
Dan Goodin
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96
Does Anthropic believe its AI is conscious, or is that just what it wants Claude to think?
We have no proof that AI models suffer, but Anthropic acts like they might for training purposes.
Benj Edwards
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278
Site catering to online criminals has been seized by the FBI
One of the last holdouts for ransomware discussions, RAMP is taken down.
Dan Goodin
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40
Report: China approves import of high-end Nvidia AI chips after weeks of uncertainty
Over 400,000 H200 chips coming to tech giants as China tries to balance tech needs with self-reliance.
Benj Edwards
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22
Users flock to open source Moltbot for always-on AI, despite major risks
The open source “Jarvis” chats via WhatsApp but requires access to your files and accounts.
Benj Edwards
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75
There’s a rash of scam spam coming from a real Microsoft address
Abusing Microsoft’s reputation may make scam harder to spot.
Dan Goodin
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49
OpenAI spills technical details about how its AI coding agent works
Unusually detailed post explains how OpenAI handles the Codex agent loop.
Benj Edwards
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61
Why has Microsoft been routing example.com traffic to a company in Japan?
Company’s autodiscover caused users’ test credentials to be sent outside Microsoft networks.
Dan Goodin
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70
Overrun with AI slop, cURL scraps bug bounties to ensure “intact mental health”
The onslaught includes LLMs finding bogus vulnerabilities and code that won’t compile.
Dan Goodin
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90
eBay bans illicit automated shopping amid rapid rise of AI agents
New policy requires “buy for me” AI tools and chatbots to obtain permission before accessing the platform.
Benj Edwards
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62
Millions of people imperiled through sign-in links sent by SMS
Even well-known services with millions of users are exposing sensitive data.
Dan Goodin
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70
Wikipedia volunteers spent years cataloging AI tells. Now there’s a plugin to avoid them.
The web’s best guide to spotting AI writing has become a manual for hiding it.
Benj Edwards
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122
10 things I learned from burning myself out with AI coding agents
Opinion: As software power tools, AI agents may make people busier than ever before.
Benj Edwards
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326