Malicious Claude Code extension on Cursor planted SSH backdoors
A malicious version of Anthropic's Claude Code VS Code extension was distributed through Cursor's extension marketplace for approximately 11 hours on October 29, exposing up to 5,000 developers to malware designed to install persistent SSH backdoors. [...]
What happened
A malicious version of Anthropic's Claude Code VS Code extension was distributed through Cursor's extension marketplace for approximately 11 hours on October 29, exposing up to 5,000 developers to malware designed to install persistent SSH backdoors. [...]
Why it matters
The development may change operating conditions or market expectations around Anthropic. Further confirmation and measurable outcomes matter.
Affected entities
View evidence
1 reports · 1 original report · 1 independent
- BleepingComputerPrimary source · Supports · EN · 100%Malicious Claude Code extension on Cursor planted SSH backdoors ↗
Claims
- Malicious Claude Code extension on Cursor planted SSH backdoors Observed
Conflicts
No material conflict detected in the available evidence.
Timeline
- First reported
Market move following event
Market reaction is not yet available for this asset and time window.