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Polymath Central

Thoughts and musings of David Greenberg, a polymath

Technology

Roblox must make changes after failing to block adults creeping on kids

August 20, 2026 Blogmaster

Despite making changes last fall to help block adults from messaging unknown children, Roblox is still failing to stop adults from creeping on kids in other ways, Australia’s eSafety commissioner,…

Cybersecurity

ThreatsDay: Gogs 10.0 RCE, n8n Workflow-to-RCE, $10M Reward, GLM-5.3 AI Exploit and More

August 20, 2026 Blogmaster

A lot of this week’s trouble starts with something trusted doing exactly what it was allowed to do. Signed drivers get turned against defenses. Legitimate apps help malware blend in.…

Technology

The EU Wanted A Deepfake Detector. It Got An AI Scarlet Letter.

August 20, 2026 Blogmaster

I spoke a little about this on last week’s Ctrl-Alt-Speech, but now that Anthropic has come out with more details about how its text watermarking works, the debate has shifted…

Cybersecurity

AI-Generated Exploit Scripts Target Siemens S7 PLCs in U.S. Critical Infrastructure

August 20, 2026 Blogmaster

The U.S. government on Wednesday warned of an “active threat” targeting critical infrastructure organizations in the country using artificial intelligence (AI)-generated exploit scripts. The activity is targeting Siemens S7 SeriesProgrammable…

Technology

Daily Deal: iPhotography Training Course

August 20, 2026 Blogmaster

Sure, just about anyone can point and shoot with a camera, but only a true expert can snap a photo that’s worth sharing with the world. From exposure to shutter…

Cybersecurity

New Cryptographic Context Injection Attack Could Let Web Pages Steal Grok Chat Data

August 20, 2026 Blogmaster

Adversa AI has disclosed an attack technique that it says can cause xAI’s Grok chatbot to send a user’s name, approximate location, subscription tier, and the prompts from the ongoing…

Technology

Area (Atlantic) Columnist Decides *Now* Is The Time To Start Defending Flock Safety

August 20, 2026 Blogmaster

Flock’s ALPR (automated license plate reader) tech spread from HOAs to police departments at an alarming rate of speed. What was once a toy for the over-privileged soon became the…

Technology

Reverse-lookup service exposed millions of photos of people’s faces

August 20, 2026 Blogmaster

When someone uploads a photo to the people-search tool ClarityCheck, the website has a clear message: “Your reverse image search is private and secure.” New research, though, shows that the…

Technology

SpaceX’s orbital data centers would create a new category of e-waste

August 20, 2026 Blogmaster

Elon Musk’s talk about maintaining a million-strong AI data center satellite megaconstellation may not exactly be practical or economical, but it might be unique. It’s about the closest we’ve come…

Technology

Genesis joins the giant electric SUV club with new GV90

August 20, 2026 Blogmaster

A couple of years ago, Genesis showed us its unique take on the luxury electric SUV with the Neolum concept. The brand’s designers know how to draw a handsome shape,…

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Polymath Central

Thoughts and musings of David Greenberg, a polymath

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