Checked fact 327631 Oct 2026Safety and security

The notice says the malicious versions "were not developed by Anthropic".

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The exact words it rests on

These malicious versions of the extension were not developed by Anthropic.

What the source said when we opened it, on 31 Oct 2026.

The source

Security notice: malicious Anthropic.claude-code versions in the Cursor VS Code Extension Marketplace
Cursor · 2026-10-29

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Checked

Checked by the notis newsroom on 31 Oct 2026, against the source above.

In the story

Cursor says Claude Code 2.1.312 and 2.1.313 on its marketplace were malicious and attempted to add an SSH key. 31 Oct 2026

Cite this fact

Short permanent address

In a sentence

“The notice says the malicious versions "were not developed by Anthropic".” ai notis, checked 31 Oct 2026. Source: Security notice: malicious Anthropic.claude-code versions in the Cursor VS Code Extension Marketplace (Cursor). https://ainotis.com/c/3276

As a reference (APA style)

ai notis. (2026, October 31). The notice says the malicious versions "were not developed by Anthropic" [Checked claim 3276]. ai notis. https://ainotis.com/c/3276

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