Clear Infosec Threat Intelligence Bulletin – Nov 4th, 2026

Cyber Security News

Devs Hit by Trojanized Claude Code Extension for Cursor

Two serious security issues hit Cursor on the same day, highlighting the risks for AI-powered integrated development environments (IDEs). Read more

Claude Model Builds Exploits Across Major Browsers & OSes

An unreleased version of the AI model has found and chained multiple vulnerabilities in Chrome, Safari, Android, Windows, and Linux, Anthropic says. Read more

Attacker Relentlessly Scans for Credentials by Impersonating AI Bots

The threat actor lurked behind bots posing as agents from OpenAI, Anthropic, Meta, and others to find exposed data. Read more

Hackers leak personnel data of 41000+ Homeland Security staff including ICE and border agents

The US Department of Homeland Security has had the details of more than 41,000 staff, including ICE and CBP agents, published online. Not ideal for an organisat… Read more

Best Practices

The days of assuming another company’s breach is someone else’s problem are over

The median blast radius of data breaches has increased year-on-year at the same time cybercriminals have begun using AI to mine stolen da… Read more

Cursor removes malicious Claude Code extension after SSH backdoor attempt

A malicious version of Anthropic’s Claude Code extension distributed through the Cursor marketplace attempted to install a persistent Sec… Read more

Anthropic AI model finds Linux kernel bug that leads to remote root access

Linux servers running Multipath TCP (MPTCP) could be vulnerable to remote code execution through a flaw in the kernel’s networking stack…. Read more

PHP2Shell plus Fragnesia: A dangerous new route from web server to root

The PHP2Shell saga continues, with attackers discovering new ways to exploit the critical vulnerability impacting millions of organizatio… Read more

New Cisco firewall zero-day being actively exploited

A high-severity flaw in the Remote Access SSL VPN service of Cisco Secure Firewall Adaptive Security Appliance (ASA) and Cisco Secure Fir… Read more

New Threats and Vulnerabilities

Attackers Chain Three Ivanti Connect Secure Flaws to Gain Unauthenticated Root Access

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday added two security flaws impacting Ivanti Connect Secure (ICS) to its Known Exploited… Read more

A Shared ChatGPT Link Could Run Attacker Code in Your Session and Read Private Chats

A malicious ChatGPT share link could run an attacker’s code in the logged-in session of anyone who opened it, allowing them to read their private conversations,… Read more

Binance Suffers Security Breach Affecting $63 Billion in Assets Nearly $3 Billion Frozen

Cryptocurrency giant Binance said on Thursday that a "security incident" on its platform has impacted about $6.3 billion worth of assets. The world’s biggest c… Read more

Attacker Tried to Exploit Alpine Linux’s GitLab via CVSS 100 Flaw Its Ruby Left Open

An attacker tried to exploit a critical GitLab vulnerability on the Alpine Linux project’s own GitLab server a week after GitLab released a fix, Alpine Lin… Read more

Adobe Commerce PolyShell Attacks Breach Hundreds of Stores as Brotli Exploit Traffic Emerges

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Tuesday added two vulnerabilities impacting Adobe Commerce and Magento, and Google’s Brotli … Read more

Patch Management

Hackers Steal About $27 Million From Polymarket Traders via Hijacked DebugBear Script

Malicious code on the website of prediction market Polymarket sold some signed-in traders’ positions and moved their funds to the hackers on October 29. The cod… Read more

Cisco Patches Actively Exploited ASA and FTD VPN Flaw That Can Crash Firewalls

Cisco has released patches to address a high-severity security flaw in Secure Firewall Adaptive Security Appliance (ASA) Software and Secure Firewall Threat Def… Read more

Attackers Exploit PHP2Shell Flaws in Internet-Exposed Palo Alto Networks Management Interfaces

Palo Alto Networks on Wednesday warned that threat actors are exploiting the recently patched PHP2Shell vulnerabilities against publicly-accessible management i… Read more

Hackers Target Critical Oracle E-Business Suite RCE Flaw Days After Security Patch

Threat actors are beginning to probe for a newly patched critical vulnerability in Oracle E-Business Suite (EBS), according to threat intelligence firm Defused … Read more

Critical 16-Year-Old UEFI Flaw Can Run Code Before Secure Boot on Network-Booting Servers

A critical 16-year-old flaw in EDK II, the open-source code that most hardware makers use to build UEFI firmware, can allow an attacker to run code on a machine… Read more

AI and Security

In the year AI re-wrote the infosec rulebook it’s comforting to know crypto exchanges still have bad security

Crypto exchange Binance has paused trading after discovering unknown parties cracked one of its workers’ laptops and used it to make massive trades.Late on Thu… Read more