# Backdoors in official Claude Code extensions

> **Newsylist Open Intelligence Dossier** · First detected: 2026-10-30 14:29 UTC · Category: Technology · Sources: 6 · Current Velocity: 6.74

## Intelligence Brief
"Backdoors in official Claude Code extensions" developed substantial multi-source reporting across the Technology sector, tracked across 6 distinct newsrooms by Newsylist.


Key reporting was led by Hacker News, Rescana, Step Security and Help Net Security. Coverage velocity and cross-outlet momentum were measured using Newsylist open coverage telemetry.


Synthesized from multi-source international reporting and live coverage telemetry under Newsylist open intelligence methodology.

## Verified Facts & Key Claims
### What drove coverage for Backdoors in official Claude Code extensions?
Coverage spiked when 6 independent newsrooms published 7 verified reports during this coverage cycle.

### How did Newsylist track this trend?
Newsylist monitored article arrival rates, source diversity, and cross-outlet validation in real time.

## Multi-Source Evidence Table
| Source Outlet | Headline | Published (UTC) | Verification URL |
|---|---|---|---|
| Hacker News | Backdoors in official Claude Code extensions | 2026-10-30 11:05 | [Source Link](https://cyberplace.social/@GossiTheDog/117528831681803563) |
| Rescana | Trojanized Claude Code Extension 2.1.313 in Cursor Marketplace Plants SSH Backdoor | 2026-10-30 08:33 | [Source Link](https://news.google.com/rss/articles/CBMiowFBVV95cUxNdDNoVkx3Mmpqa0JHVUJkdjl6RTEyX1RpU0p2eHF3eGxWNm52aEd1NDUxY3ZZLU12QTk0WC1OZkNCR2J6azRkTEd6QVliX1B0V0NzT21RRWRYUTBwQngyNFR4dFNrMmxyeGhwSzE1a1VJdWZ4X0hkcWxlWHgtWFVJcGRSSjczWm04RXJCVHJ5ZGkzQlRmTHJYbVhFQ3FyS0ViLTEw?oc=5) |
| Step Security | Trojanized Claude Code Extension Delivered Persistent SSH Backdoor to Developer Machines | 2026-10-30 08:33 | [Source Link](https://news.google.com/rss/articles/CBMic0FVX3lxTE5QN1Q5bXI1WXMzZlpOLWIxaDJEVGhuTWZxcXRwTWdaXzlETHZYd0pIcGhpdnR3R1dsQXUzWGFoZHUyZUd2UldGMHotYVFHNHFQZjdCWERJektwVXZVMWw5dGc4WldHQktiLXFYVnBST19Ecmc?oc=5) |
| Help Net Security | Claude Code extension poisoned with persistent SSH backdoor | 2026-10-30 08:33 | [Source Link](https://news.google.com/rss/articles/CBMihAFBVV95cUxOVnQ4Ylo3R2N1ekJRbGFaYko3RF9FN2hsdzlncVA1U1Y1TWxLcTdnUEhyR3NYMmtYaUJYRXBsSlQ0bzZKX3ZVTEdkaFc0eWZYbVFLVXZVbnNxcHROU3NHQkhGQWRHNGc0MnNNaXo5VnktTEZILU9PUTltS0liN2lVUUdaWEU?oc=5) |
| The Hacker News | Official Claude Code Extension on Cursor Marketplace Trojanized with Persistent SSH Backdoor | 2026-10-30 08:33 | [Source Link](https://news.google.com/rss/articles/CBMigwFBVV95cUxPS2hyRVBYNEpLVEQ2V2IwYk9aZmhtUm9veEV5RE4tZVVONXpIM1Y5Q1hxSWprYjFDR1NXNGF2MjlyeUpod2p6NFNydVltcmpudHoxU2wtUWJxSUdrWUhhanRiTUo3ZzdGNXViN0NyRUdTcHFiVEJfT2Z0VklGczNiOGhzYw?oc=5) |
| Reuters | Cursor says up to 5,000 users affected by tampered Claude Code extension | 2026-10-30 08:33 | [Source Link](https://news.google.com/rss/articles/CBMixgFBVV95cUxOSE5Sd2ZzblVoTHk3cWowdjBHOUlGQ25obHhuSkoyell3S2JWTUxqeXFFRnBMbTVaOENobjFKVFJXT0VhQi1VSzVBX0dSM3N5SGJ4N2VWSjhnX3NCQlJsSmdTX1RmSlpEeHN0NFFXVll0MzZRV1lfbUpkcDZ1dk9xQXpSWHBVUVJiMDJCYXgtMmlxMnQ1a2dxcmxBZlFBcTY0SUZMYXZyeHNZX3o1ejRUbkxmN3JqRlYtSnNCRnFiZkswLWx4S2c?oc=5) |
| Hacker News | Official Claude Code extension compromise | 2026-10-30 07:09 | [Source Link](https://phorion.io/blog/offical-claude-code-vsx-compromise/) |

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*Canonical Source: https://www.newsylist.com/trend/2026-10-30/backdoors-in-official-claude-code-extensions*
*Synthesized by Newsylist Open Intelligence Engine under E-E-A-T journalistic standards.*