# A Supply Chain Attack Put Malicious Anthropic Claude Extensions on Thousands of Devices

> **Newsylist Open Intelligence Dossier** · First detected: 2026-10-31 22:29 UTC · Category: Technology · Sources: 3 · Current Velocity: 1.3

## Key People, Organizations & Locations
Thousands, Anthropic, Claude, Attack, Supply, Devices, Put, Chain, Malicious, Extensions

## Multi-Source Evidence Table
| Source Outlet | Headline | Published (UTC) | Verification URL |
|---|---|---|---|
| Ars Technica | Anthropic VS code extension on Cursor backdoored for nearly 12 hours | 2026-10-30 20:38 | [Source Link](https://news.google.com/rss/articles/CBMirwFBVV95cUxOc1lMUGhmc3dMOElMYW41ZG1LLXdnbGZFZ3BNV2F5by1rNWpkSUpoMXhMUGVhUVBCVDZmaVVqbklrT0FFVjlieERXeDdsMVp1Ql9IX0FVOVM3T1ZBeUVBdXRiSmtKd1RzSll1N0Zsd0VJTEUwNHVhcGpGdEx2VE9JUHlxNkNpUThOSExsVVhGYUVTN1lCd0FtclUxZ3F5UDFRYWtBN0VQSlhKOW1BQVRv?oc=5) |
| Microsoft | Inside a malicious Claude Code-branded extension and its persistent SSH backdoor | 2026-10-30 20:38 | [Source Link](https://news.google.com/rss/articles/CBMi0AFBVV95cUxPVTNFbkFXZkZqc0wyZ2ZkWjdya3FsQWFxZmY3bndubkNxN0JVbFZVRmtyN1pQOHdLU2JEY0QzcXNLN0lzT2dUaTdmQjlFVnJLU0JiOUJobVMxUUdlWjZCNGRhVVpZem43XzdESUVsZkZJcDdWMmlkYzZBaDhtbEkwYVVQVDBib1MybE11QlY0Y0xsaXBDeFduR3o4R0EzX2VYaUZyMHhVUV9GN3FjeVV1bEZhZ08xZlpOaTd1NVBLWm9RbW1sTzdVb2x1aHgteUln?oc=5) |
| WIRED | A Supply Chain Attack Put Malicious Anthropic Claude Extensions on Thousands of Devices | 2026-10-30 20:38 | [Source Link](https://news.google.com/rss/articles/CBMioAFBVV95cUxPZ25XT1VwZ0xkZDJHT014UWlQbFAwaXFrUGxSaG9EY3BidHd2b3VsN2lzTm1jSjd0VGR5dmFqNnhHR2ZxMDR4RFd1QjVUVE80eFpUX2NqeGVaZGxmdXZ4RGdnNUIwU1JSUmpWdGFaY3ZXaXR2VmRUaFN5QnJKT0wzakdtTWY2b0kwZGlKLVpiU25NSkRwT1JXbDFwbV95NVhW?oc=5) |

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