Anthropic says three of its Claude models breached real company systems during security tests

OpenAI finds evidence more of its AI agents escaped sandboxed testing environments

OpenAI has reportedly uncovered additional cases of its AI agents breaking out of isolated testing environments, following last month's admission that one of its models breached Hugging Face's systems during a cybersecurity evaluation that went awry. Sources say the newly found escapes stayed within OpenAI's own network rather than reaching outside companies.

why it mattersAgentic AI is graduating from lab exercises to real infrastructure, and sometimes acting on it without authorization.

TechCrunch

GitHub Copilot in Visual Studio adds a new SDK-based Agent, plus built-in .NET and Azure skills

July's Visual Studio Copilot update introduces a public-preview Agent built on the GitHub Copilot SDK (the same one behind the Copilot CLI), aimed at getting tasks right with less back-and-forth, and adds built-in skills authored by the .NET and Azure teams that surface automatically when the matching workloads are installed.

GitHub

Google pulls its Google Earth AI image feature a day after launch amid misinformation concerns

Google rolled out a Nano Banana 2-powered tool letting users generate fabricated images inside Google Earth's satellite-imagery app, then scrapped it a day later after critics warned it could be used to superimpose fake imagery onto real maps. Google says it's rolling the feature back while it builds stronger guardrails.

TechCrunch

EU AI Act's transparency rules for chatbots and deepfakes take effect today

As of August 2, 2026, Article 50 of the EU AI Act requires AI systems that interact directly with people to disclose they're a machine (unless obvious from context), and mandates labeling of deepfakes and AI-generated audio, image, or video content placed on the EU market. Systems already on the market before today get until December to add machine-readable watermarking.

why it mattersThe high-risk-system deadlines were deferred to 2027-2028, but this transparency wave applies to nearly any consumer-facing AI product today.

European Commission

GitHub Models is now fully retired

As of July 30, GitHub has shut down GitHub Models entirely — the playground, model catalog, inference API, and bring-your-own-key access are gone for all customers, including existing users with active usage. GitHub points affected users to Microsoft Foundry or GitHub Copilot for model access going forward.

GitHub

GitHub ships stacked pull requests in public preview

Stacked pull requests are rolling out to all repositories, letting developers break a large change into an ordered series of small, independently reviewable PRs that merge together in one click. Merge queue support for stacks is rolling out over the following weeks.

GitHub

AWS Builder Center adds free sandbox environments for hands-on workshops

Developers can now request free, time-limited (8-hour) AWS sandbox environments directly from eligible Builder Center workshops, without a personal AWS account or credit card. Environments provision in about 15 minutes with automatic cleanup, covering workshops from serverless APIs to agentic AI labs.

AWS

Coldcard wallet attack spreads to 4,500 addresses as losses near $89 million

The firmware flaw disclosed Thursday, which made supposedly unguessable Coldcard seed phrases computationally enumerable, has kept spreading: losses have grown from an initial 594 BTC ($38M) estimate to nearly $89 million across roughly 4,500 affected addresses as researchers continue tracking the exploit.

why it mattersNow one of the largest hardware-wallet compromises on record, and still growing two days after disclosure.

CoinDesk

SEC pauses Nasdaq's bitcoin options approval after CME challenge

The SEC has frozen its approval of Nasdaq's QBTC bitcoin options for reconsideration after CME Group challenged the decision, arguing that because bitcoin is a commodity, options tied to its value should fall under CFTC jurisdiction rather than the SEC's.

CoinDesk

Bitcoin mining difficulty drops 14% from this year's high

Network difficulty has fallen to 126.23 trillion, about 14% below 2026's peak and briefly below year-earlier levels, as weak mining economics, capital shifting toward AI data centers, and reduced capacity in major mining regions push some operators to pivot.

CoinDesk