Latest cybersecurity reporting from selected sources.

Microsoft-Owned GitHub, Which Runs npm, Previews Supply-Chain Security FixesThe popular Mastra AI framework, used to build artificial intelligence agents, workflows and retrieval-augmented generation pipelines, has been poisoned by attackers, and Microsoft-owned GitHub has advised all developers to downgrade Mastra, pending compromised packages being found and eradicated.

Supply-Chain Attack Uses Malicious GitHub Actions Workflow File to Steal SecretsMore than 5,000 GitHub repositories fell victim to an automated campaign, codenamed "Megalodon," in which an attacker injected malicious GitHub Actions that executed a script designed to steal development environment secrets, plus a variety of keys, tokens and other credentials, researchers said.

JavaScript Repository Contends With Wormable Malicious CodeAn apparent "Dune" aficionado is responsible for the first self-propagating attack on the npm JavaScript repository in what one security company has called one of the most severe JavaScript supply-chain attacks so far. A malicious script exfiltrated data to GitHub repositories named "Shai-Hulud."

Malicious Code Injected in reviewdog Just Hours Before tj-actions BackdooredJust days after researchers discovered an attack that subverted a widely used tool for software development platform GitHub, they discovered a second, prior attack, as part of what one expert said may be "a chain of supply chain attacks eventually leading to a specific high-value target."

Over 23,000 Code Repositories at Risk After Malicious Code Added to GitHub ActionAttackers subverted a widely used tool for software development environment GitHub, potentially allowing them to steal secrets from thousands of private code repositories as well as compromise other, widely used "open source libraries, binaries and artifacts" that use the tool, experts warned.