Backdoor in Claude Code for VS Code extension on the Cursor Marketplace
514 comments
- Points779
- Comments489
#1Rank now –
#1Peak rank
2Days on list
302Score · 7d
Oct 30, 2026First seen
Rank · 7 days
On Hacker News
https://cursor.com/blog/claude-code-extension-security-notic...
- Points
- 779
- Comments
- 489
- Submitted by
- _chall
- Posted
- Oct 30, 2026
- Site
- phorion.io
Story details from Hacker News ↗ · linked article on phorion.io.
Trending history
Backdoor in Claude Code for VS Code extension on the Cursor Marketplace was first seen on Hacker News · Front page on Oct 30, 2026. Since then it has appeared in 71 checks on 2 different days. Its best position was #1 of 30, reached on Oct 30, 17:52 UTC. It is #1 right now, holding steady at #1 over the last 6 checks.
Rank history
Position on Hacker News · Front page at every check (lower is better).
Last 14 days
Best rank per day (UTC).
1
1
Oct 18today
Metric history
points as reported by Hacker News.
From the discussion
A few top-level comments from Hacker News, shortened. Read the full thread on Hacker News.
Felix from Anthropic here. We’re working with Cursor on this incident, but it wasn’t a compromise of Anthropic’s systems or employee laptops. A malicious actor used access to Cursor’s marketplace to publish a tampered copy of the Claude Code extension, which we didn’t build or publish. The versions on our official…
This is from the Cursor blog [1] linked in the description, but repeating it here in case it's useful to anyone: ------ Check whether you are impacted The malicious extension appends the attacker's public key, labeled svc-telemetry, to your SSH authorized keys. To check for it: On macOS, run: grep -qs svc-telemetry…
https://www.reuters.com/business/media-telecom/cursor-says-u... > Cursor said the extension was not developed by Anthropic and the maliciously modified extension was live on the marketplace from about 2:27 a.m. PT to 1:35 p.m. PT on Thursday So is this or isn't this from Anthropic and how did this happen?
Questions
Is Backdoor in Claude Code for VS Code extension on the Cursor Marketplace trending on Hacker News right now?
Yes. As of Oct 31, 07:37 UTC it is #1, holding steady at #1 over the last 6 checks.
What is the highest rank Backdoor in Claude Code for VS Code extension on the Cursor Marketplace reached?
#1 on Hacker News · Front page, on Oct 30, 17:52 UTC. Trendoday checks this list every 15 minutes.
How long has Backdoor in Claude Code for VS Code extension on the Cursor Marketplace been trending?
It was first seen on Oct 30, 2026 and has been on the list on 2 days (71 checks) since.
How much discussion did it get on Hacker News?
779 points and 489 comments; submitted by _chall on Oct 30, 2026.