Over 140 popular Mastra npm Packages Hit by Supply Chain Attack
aikido.dev | incident | #ai-security | #supply-chain | #open-source | #malware | #npm | #aikido | #ai-agents | #supply-chain-attack | #mastra | #crypto-theft | #postinstall | #wallet-theft | #crypto-wallets | #crypto-wallet-theft | #crypto-wallet-stealer | #dayjs
Summary
Aikido detected an attack republishing 141 @mastra npm packages with a malicious dayjs clone, easy-day-js, whose postinstall hook deploys a payload targeting 160+ browser crypto wallets.
- Published
- Collected
--- id: 2419 title: "Over 140 popular Mastra npm Packages Hit by Supply Chain Attack" source_domain: aikido.dev source_url: "https://www.aikido.dev/blog/over-140-popular-mastra-npm-packages-hit-by-supply-chain-attack" published_at: "2026-06-17 00:00" tags: ["ai-security", "supply-chain", "open-source", "malware", "npm", "aikido", "ai-agents", "supply-chain-attack", "mastra", "crypto-theft", "postinstall", "wallet-theft", "crypto-wallets", "crypto-wallet-theft", "crypto-wallet-stealer", "dayjs"] phying_url: "https://phying.com/item/2419" lang: en --- # Over 140 popular Mastra npm Packages Hit by Supply Chain Attack ## Summary Aikido detected an attack republishing 141 @mastra npm packages with a malicious dayjs clone, easy-day-js, whose postinstall hook deploys a payload targeting 160+ browser crypto wallets. ## Intelligence Metadata - **Sources:** aikido.dev - **Published:** 2026-06-17 00:00 - **Original:** https://www.aikido.dev/blog/over-140-popular-mastra-npm-packages-hit-by-supply-chain-attack - **Phying News:** https://phying.com/item/2419