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Security timeline

  1. Vulnerability reported by GBHackersChained flaw in ChatGPT public share links exposed private conversations
  2. Vulnerability reported by Cyber Security NewsCritical ChatGPT flaw let one malicious link access private chats; OpenAI has fixed it
  3. Malware reported by Security AffairsSecurity Affairs newsletters flag malicious Claude Code extension, Trezor implant warning and AI-driven attacks
  4. Activity reported by GBHackersAttackers impersonate ChatGPT, Claude and Perplexity bots to hunt for exposed credentials

Recent news

GBHackers· · High

Chained flaw in ChatGPT public share links exposed private conversations

Researchers chained several flaws so that a public share link ran attacker-controlled JavaScript inside the victim's authenticated session, putting private conversations at risk. fixed the issue on October 26 and classified it as P1, and the Parameter researchers' write-up says it earned a $5,000 bounty.

Cyber Security News·

Vendor article argues penetration testing firms should run AI in-house to protect client data

The article, published as promotional content for PentestPad, says penetration testing firms face pressure to adopt AI and that staff often use it without approval. It argues that uploading client scope documents, vulnerabilities and credentials to cloud AI providers risks breaching confidentiality and compliance obligations, and recommends self-hosted models. PentestPad is presented as a reporting platform that can run on self-hosted or air-gapped infrastructure and exposes its data to agents through MCP.

Cyber Security News· · Critical

Critical ChatGPT flaw let one malicious link access private chats; OpenAI has fixed it

A critical vulnerability allowed attacker-controlled JavaScript to run in a victim's signed-in session via a malicious shared conversation. It could list and read private conversations and exfiltrate data to an external server, with a single link sufficing in the demonstration. fixed it on 26 October 2026 after a report from Parameter, which received a $5,000 bounty.

Security Affairs·

Security Affairs newsletters flag malicious Claude Code extension, Trezor implant warning and AI-driven attacks

The Security Affairs AI-cybersecurity and malware newsletters collect recent reporting on AI-enabled attacks, Android spyware such as uCreator, and a Magento skimming campaign affecting 953 stores. They also flag a malicious .claude-code build (2.1.313) found in the Cursor Extension Marketplace, a Trezor warning about a suspected crypto-theft implant, and a Hugging Face malware campaign that returned after a takedown.

GBHackers·

Attackers impersonate ChatGPT, Claude and Perplexity bots to hunt for exposed credentials

A single actor reportedly rotated through about 32 bot identities, including , and Perplexity, to scan enterprise websites for exposed passwords, API keys and cloud credentials. Cequence tracked the campaign across multiple industries, and on one October day it reached 48% of the organisations it protects that received any such traffic. Teams should review bot management rules and check public-facing sites for leaked secrets.

404 Media·

Journalists report surge of AI-generated tech support spam after ChatGPT referrals

A journalist says that since publishing an article about acting as tech support, he has received a rising number of AI-generated emails from people asking him to fix their technical problems. He believes the trend affects journalists broadly, as ChatGPT chats reportedly directed users to contact multiple journalists, lawyers and academic researchers.