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High-severity WinRAR 0-day exploited for weeks by 2 groups

A high-severity zero-day in the widely used WinRAR file compressor is under active exploitation by two Russian cybercrime groups. The attacks backdoor computers that open malicious archives attached to phishing messages, some of which are personalized. Security firm ESET said Monday that it first detected the attacks on July 18, when its telemetry spotted a...

Project

The GPT-5 rollout has been a big mess

It’s been less than a week since the launch of OpenAI’s new GPT-5 AI model, and the rollout hasn’t been a smooth one. So far, the release sparked one of the most intense user revolts in ChatGPT’s history, forcing CEO Sam Altman to make an unusual public apology and reverse key decisions. At the heart...

Project

Encryption made for police and military radios may be easily cracked

Two years ago, researchers in the Netherlands discovered an intentional backdoor in an encryption algorithm baked into radios used by critical infrastructure–as well as police, intelligence agencies, and military forces around the world–that made any communication secured with the algorithm vulnerable to eavesdropping. When the researchers publicly disclosed the issue in 2023, the European Telecommunications...

Project

It’s getting harder to skirt RTO policies without employers noticing

Companies are monitoring whether employees adhere to corporate return-to-office (RTO) policies and are enforcing the requirements more than they have in the past five years, according to a report that commercial real estate firm CBRE will release next week and that Ars Technica reviewed. CBRE surveyed 184 companies for its report. Among companies surveyed, 69...

Project

Adult sites are stashing exploit code inside racy .svg files

Dozens of porn sites are turning to a familiar source to generate likes on Facebook—malware that causes browsers to surreptitiously endorse the sites. This time, the sites are using a newer vehicle for sowing this malware—.svg image files. The Scalable Vector Graphics format is an open standard for rendering two-dimensional graphics. Unlike more common formats...