{"data":{"id":"54fe1350-c309-462e-a42c-62134a70017f","title":"Microsoft links Mastra AI supply chain attack to North Korean hackers","summary":"North Korean hackers from the Sapphire Sleet group compromised an npm maintainer account (a person's credentials for publishing packages to npm, a JavaScript library repository) and used it to publish malicious updates to over 140 packages, injecting a fake dependency called \"easy-day-js\" that stole credentials, API keys, and cryptocurrency wallet information from developers' computers. The malware used a post-install hook (code that runs automatically when a package is installed) to download and execute additional harmful software, with different persistence techniques for Windows, Linux, and macOS systems.","solution":"N/A -- no mitigation discussed in source.","labels":["security"],"sourceUrl":"https://www.bleepingcomputer.com/news/security/microsoft-links-mastra-ai-supply-chain-attack-to-north-korean-hackers/","publishedAt":"2026-06-20T14:09:19.000Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":null,"severity":"critical","attackType":["supply_chain"],"issueType":"news","affectedPackages":null,"affectedVendors":["Microsoft"],"affectedVendorsRaw":["Mastra","Microsoft","npm","dayjs","MetaMask","Phantom","Coinbase Wallet","Binance Wallet","TronLink"],"classifierModel":"claude-haiku-4-5-20251001","classifierPromptVersion":"v3","cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":null,"epssScore":null,"patchAvailable":null,"disclosureDate":"2026-06-20T14:09:19.000Z","capecIds":null,"crossRefCount":0,"attackSophistication":"advanced","impactType":["confidentiality","integrity"],"aiComponentTargeted":"framework","llmSpecific":false,"classifierConfidence":0.95,"researchCategory":null,"atlasIds":null}}