According to IT之家, Cursor reports results of investigation into malicious Anthropic Claude Code extension copy

According to IT之家, Cursor said that after a two-week investigation it found a malicious, unauthorized copy of the Anthropic Claude Code extension in its VS Code extension marketplace on October 29. The company said most customers were unaffected, with at most 5,000 users impacted. For users who did not use privacy mode, fewer than 0.05% had programming-agent trace data exposed. Cursor said it has directly notified affected customers and will keep strengthening security.