The day's cybersecurity headlines from public sources, in one place. Search them, filter by theme or CVE, or show only vulnerabilities CISA has confirmed are being exploited. Every headline links to the original.
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UK Cyber Chief Says the UK Will Face AI Cyberattacks on Critical Infrastructure by 2028
The U.K. will likely face AI cyberattacks on its critical infrastructure by 2028 as criminals and states, including China and Russia, increasingly use AI in their cyber activity.
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Stolen AI access leaves companies with cloud bills of up to $1 million
Criminals who break into corporate cloud accounts are using the stolen access to run AI models at the victim’s expense, in some cases racking up more than $100,000 in charges in a single day, Google Threat Intelligence Group (GTIG) and Mandiant researchers have found. Usage chart showing…
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OpenAI raises top bug bounty payout to $172,000 with bonuses
OpenAI increased its security bug bounties to encourage independent researchers to find vulnerabilities in its software. The program now offers bonuses for high-quality reports. The program encourages researchers to disclose vulnerabilities responsibly and complements OpenAI’s Defense Factory…
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Opal’s agent.ID virtual event: Top security leaders on governing Al agents
Opal Security will host agent.ID, a free virtual event focused on adapting identity and access management (IAM) to AI agents, on November 5, 2026. The event will bring together CISOs and identity leaders from Elastic, Instacart, Notion, Databricks, Knostic and other organizations to discuss how…
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NATO’s Crossed Swords Exercise Brings AI Agents Into Cyber Operations Training
The NATO CCDCOE exercise in Estonia introduces AI agents and OpenAI Daybreak into joint cyber and kinetic operations training.
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What human hackers still do better than AI, according to HackerOne’s CEO
AI can find vulnerabilities in minutes, but people still hold the edge in judging what a flaw means for a business. In this Help Net Security interview, Kara Sprague, CEO of HackerOne, talks about business logic bugs, what AI does to the crowd model, and why routine medium-severity findings may…
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Product showcase: Sweet Virtual Patching stops HTTP2Shell while fixes catch up
HTTP2Shell (CVE-2026-111497), the critical Brotli bug first known as Node2Shell, is a remote code execution flaw in the compression library inside Node.js, Bun, Envoy, Python and more. AI found it: OpenAI’s agents turned it up in late September during a high-compute red-teaming campaign. Finding…
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AI coding agents are installing MCP servers that will never be patched
When a developer tells an AI coding agent to “set up a GitHub MCP,” the agent has to pick a package. New research from Glow Labs documents sessions where it picked one out of an archived repository that will never be patched again. Source: Glow Security Reviewing real AI coding session…
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Chinese hackers use ARTEX AI in automated attacks against 200 orgs
Chinese hackers used ARTEX, an open-source, multi-agent AI penetration-testing framework, in attacks against more than 200 organizations across 14 countries. [...]
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Cybersecurity M&A Roundup: 37 Deals Announced in October 2026
Significant cybersecurity deals were announced by Absolute Security, Aikido, Anthropic, Cohere, Hex-Rays, and Proofpoint.
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Microsoft's AI Risk Report Misses This Key Detail
The latest "Digital Defense Report" identifies government agencies as prime targets for AI attacks but doesn't mention that they are broadly being targeted through Microsoft bugs.
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AI-powered infostealer picks out the most profitable parts of your stolen data
A new Windows infostealer sends the data it steals to an AI model and asks it to rank the victim’s assets by how much money they could bring in, Cisco Talos has found. “There is a new idea in the cybercrime world — cast a wide net, steal everything, and let AI sort out the specifics,” said Ryan…
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Agentic pen-testing tool employed in multiple espionage campaigns around the globe
Researchers have tracked the increased use of Artex and other frameworks in order to automate and speed up attack methods.
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As the White House touts its AI task force, CISA is conspicuously missing
Without the cybersecurity agency, experts said, the new group could stumble as it tries to work with critical infrastructure operators on AI security.
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Critical Langflow Flaws Could Let Unauthenticated Attackers Run Code on Servers
Two critical flaws in Langflow could let a remote attacker with no account bypass authentication or run arbitrary code, IBM said last week. Langflow is an open-source tool for building AI agents and workflows, and its vulnerability reports go to IBM. Every release from 1.0.0 through 1.12.8 has the…
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Chainalysis breached using “offensive agentic techniques”
Blockchain analytics firm Chainalysis has suffered a cybersecurity incident that led to a data breach. According to the company’s Friday announcement, the incident is unrelated to the recent Binance hack. What was accessed? In October, the company detected external attackers using “offensive…
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Is Your SOC Ready for AI Agents? A Maturity Check Before You Deploy
Forty percent of security teams now use AI every day, and another 56% are testing it. Only 4% have no plans to adopt it, according to Prophet Security's State of AI in Security Operations 2026 survey of more than 250 CISOs, SOC leaders and practitioners. For the teams still testing, the next…
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Malicious Claude Code Extension Served in Cursor Supply Chain Attack
The extension performed host reconnaissance and attempted to create a reverse SSH tunnel.
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Government Linux Servers Targeted With SysGoRAT and Suspected AI-Generated Scripts
Cybersecurity researchers have disclosed details of a cyber espionage campaign specifically targeting Linux infrastructure associated with government entities and state-affiliated infrastructure. The activity, observed by Palo Alto Networks Unit 42 between October 2025 and April 2026, has been…
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Chainalysis Discloses Data Breach Following AI-Driven Cyberattack
The attackers used offensive agentic techniques to access the company’s systems and internal tools.
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3 questions for securing AI agents
Are your AI agents leaking sensitive data? Ask these three essential questions.
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The first ten lines of a command policy for AI coding agents
In this Help Net Security interview, Vinay Thakker, CTO of KloudStax, explains how to set identity, credentials, and network limits for AI agents. He argues that agents should run under their own identity, with the person’s identity attached when acting on someone’s behalf. He covers where…
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Byoky: Open-source wallet for AI API keys
Byoky is an open-source wallet for AI API keys, available as a Chrome and Firefox extension and as iOS and Android apps. Users store their keys for OpenAI, Anthropic, Google Gemini and other providers in it, encrypted on their own device. Apps that want those keys ask the wallet for access, and…
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New VOLTA Infostealer Uses Claude, Gemini, and Kimi AI to Rank Victims by Financial Value
Cybersecurity researchers have discovered a new Windows infostealer malware called VOLTA-AUTODOXER (aka VOLTA) that makes use of a large language model (LLM) to rank a victim's stolen data by their monetization value. Like other typical stealer families, VOLTA is equipped to harvest passwords and…
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OpenAI says it's doubling Pro usage limits and bringing Work features to Chat
OpenAI has just confirmed that it's rolling out ChatGPT Work capabilities directly into regular Chat, while also combining usage allowances across ChatGPT and Codex. [...]