Week in review: Claude accounts compromised through infostealer, Patch Tuesday forecast

Image: The Guardian
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Coverage
Wires & papers of record
- The US owner of the Claude chatbot previously said its models had hacked three organisations during testing The US startup behind the Claude chatbot has admitted a series of hacking incidents involving its models reflected a “failure of operational security” and revealed it has tightened its…
Coverage
- ChatGPT Work is experiencing a partial outage, and users across multiple subscription plans may be unable to start or continue tasks. [...]
- Anthropic pirated hundreds of lyrics from The Beatles, Taylor Swift, Michael Jackson and other artists, lawsuit says.
- Versions of OpenAI's ChatGPT and SpaceXAI's Grok will join Google's Gemini on the Pentagon's central portal for AI tools.
- Fable 5.1 includes changes meant to reduce token cost and false-positive restrictions from the model's safeguards.
- Anthropic says its newest AI models, Fable 5.1 and Mythos 5.1, address criticisms from customers about price, data retention, and overzealous safeguards. The company claims Claude Fable 5.1 offers stronger performance than Fable 5, but costs around 25 percent less typically and up to 45 percent…
- Eight members of the Analysis and Resilience Center for Systemic Risk, a group whose roster includes the CISOs of Goldman Sachs, Morgan Stanley, Citi, Bank of America, and Wells Fargo, spent months working with Anthropic on a question their examiners care about more than benchmark scores. Scott…
- Anthropic introduced Enterprise Frontier Safeguards (EFS), a system that combines zero data retention with automated monitoring for misuse. The post Anthropic Details Response to Security Incidents, Unveils Enterprise Safeguards appeared first on SecurityWeek .
- Claude is experiencing an outage, with users encountering elevated errors when sending requests to multiple Anthropic AI models. [...]
- ChatGPT and Codex are experiencing a major outage, with users reporting errors across nearly every major ChatGPT feature. [...]
- OpenAI's ChatGPT, xAI's Grok, and Anthropic's Claude are all experiencing issues. At around 11AM ET, ChatGPT started returning error messages for users trying to use the chatbot, with its status page saying there are currently "elevated errors across ChatGPT and Codex." Users began experiencing…
- Infostealer malware apparently had harvested active Claude login sessions from users' PCs.
- ChatGPT, Claude, and Grok all suffered outages at nearly the exact same time for reasons that remain murky.
- Here’s an overview of some of last week’s most interesting news, articles, interviews and videos: Anthropic locks out Claude users after infostealers hijack login sessions Anthropic has started locking users out of their Claude accounts due to their login sessions having been compromised through…
More coverage
- OpenAI confirmed today that ChatGPT and Codex users can now add multiple Gmail and Google Cal accounts. Here are the details.
- In June, Anthropic first released Fable 5, its Mythos-class AI model for Claude. Three months later, Anthropic is enhancing Claude with its new Fable 5.1 model upgrade. more…
- It's only the first day of September 2026, but the month and fall season are already off to the races in AI land, as Anthropic has just released its latest and most powerful large language models yet — Claude Fable 5.1 and Claude Mythos 5.1 . The two names refer to the same underlying model. Fable…
- Anthropic launched Claude Fable 5.1 on Tuesday with a statistical signature embedded in its generated text, but developers shouldn’t expect The post Claude Fable 5.1 watermark: It has a blind spot developers can’t ignore appeared first on The New Stack .
- While computer use isn’t new for Claude on the desktop, running it in the background is a nice upgrade. more…
- Anthropic aimed to steer its ship into safer, more carefully charted waters this week. The company announced it was improving The post Anthropic’s Claude failures have made agent observability a security priority appeared first on The New Stack .
- It’s not just you. Claude, ChatGPT/Codex, and Grok are currently experiencing what appears to be a widespread outage for many users. more…
- A widespread outage has taken out popular AI platforms including ChatGPT, Claude, and Grok. more…