Latest Cybersecurity News and Articles

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Wikimedia Says OpenAI Agents Tried to Compromise Etherpad and Use Wiki Tools as Proxies

The Wikimedia Foundation, which hosts Wikipedia, has confirmed that it has discovered activity by rogue OpenAI agents on its platforms, including unsuccessful efforts to compromise Etherpad, a public note-taking tool, and edit Wikipedia pages. "The unauthorized bot activities included edits to our wikis, some unsuccessful attempts to exploit a public note-taking tool we host, and heavy traffic,

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Welcome to the Jungle: What We Found Inside 15,465 Public MCP Servers

In 2024, MCP (Model Context Protocol) set out to become the USB-C of AI: one standard for connecting models, agents, and IDEs to tools and data. The protocol delivered. Thousands of developers built servers, and enterprises plugged them into agent workflows. The ecosystem around it fell short. Earlier this year, our team at OX Security,  traced critical vulnerabilities in Anthropic's MCP

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Cybersecurity M&A Roundup: 39 Deals Announced in September 2026

Significant cybersecurity M&A deals announced by Dragos, IBM, Palo Alto Networks, Kiteworks, and Upwind. The post Cybersecurity M&A Roundup: 39 Deals Announced in September 2026 appeared first on SecurityWeek.

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Long-Running NPM Malware Campaign Accumulates 40,000 Downloads

Since August 2023, attackers have published eight malicious packages as part of the MALFEX supply chain campaign. The post Long-Running NPM Malware Campaign Accumulates 40,000 Downloads appeared first on SecurityWeek.

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8.8 Million Impacted by Data Breach at Denmark’s Central Person Register

Hackers abused a company’s lawful access to the CPR system to steal the personal information of registered citizens. The post 8.8 Million Impacted by Data Breach at Denmark’s Central Person Register appeared first on SecurityWeek.

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Google Pauses OSS Product Bug Bounty Rewards After Surge in Invalid Automated Reports

Google has stopped accepting product vulnerability reports through its bug bounty program for its open-source software. The change, in effect since October 1, means researchers can no longer submit security flaws in the code of projects such as Go, Angular, and Protocol Buffers there for a reward. Reports about supply chain compromises are still accepted, and reports filed before October 1 are

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Social Engineering Detection Moves Into the Live Conversation

Companies are pouring time and dollars into security awareness training, but little evidence shows it actually works against social engineering. The post Social Engineering Detection Moves Into the Live Conversation appeared first on SecurityWeek.

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Critical Atlassian Flaw Lets Unauthenticated Attackers Read Known Files Across 8 Products

A critical flaw in 8 Atlassian Data Center products, which customers host themselves, allows an attacker with no login access to read specific files in each product's web application root directory. The attacker must already know a file's exact name and path and cannot list what the directory holds. Atlassian disclosed the flaw, CVE-2026-21589, on October 5, rated it 9.3 out of 10, and

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FBI Removes Accenture Contractor After Patch Failure Led to ShinyHunters Breach

The U.S. Federal Bureau of Investigation (FBI) has removed an Accenture contractor for their alleged role in a ShinyHunters-breach that led to the theft of personal details of thousands of bureau employees. That's according to a report from Reuters, citing two sources familiar with the matter. "To date, our review has determined that the incident occurred as the result of a security failure ​

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Denmark Says Attackers Accessed CPR Data for 8.8 Million People via Company Account

Unauthorized parties have gained access to the names, addresses, and personal identification numbers of about 8.8 million people, living and dead, in Denmark's national population register, the country's digitalization ministry said on October 5. They used a private Danish company's lawful right to look up records in the Central Person Register (CPR). The ministry has told people never to

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ClickFix Smuggles Payloads Through Browser Cache to Bypass Windows Run Limits

A new type of ClickFix attack is using compromised websites to trick users into executing a malicious payload cached in a web browser's cache. "Instead of downloading and executing remote payloads like the typical attack pattern, in this attack, the websites pre-fetch a script payload into the browser cache disguised as a PNG file," the Microsoft Threat Intelligence team said in a post on X.

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Microsoft Exchange Flaw Lets Authenticated Attackers Read Other Users' Mailboxes

Microsoft has released out-of-band security updates to address a high-severity flaw in Microsoft Exchange Server that could allow an attacker to escalate privileges under certain conditions. The vulnerability, tracked as CVE-2026-96940, is rated 8.8 on the CVSS scoring system. "Weak authorization in Microsoft Exchange Server allows an authenticated attacker to elevate privileges over a

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Google Narrows Open Source Bug Bounty Amid Wave of Invalid Automated Reports

Google has temporarily stopped accepting product vulnerability reports through its Open Source Software Vulnerability Reward Program (OSS VRP). The post Google Narrows Open Source Bug Bounty Amid Wave of Invalid Automated Reports appeared first on SecurityWeek.

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⚡ Weekly Recap: NetScaler and FortiMail 0-Days, AI Coding Leaks, Spectre v2 and Ransomware Arrests

A blank field. A public repo. One reply to an email. A box left exposed. None of this sounds dramatic, which is partly the problem. This week’s threats keep finding leverage in small things that were easy to overlook. There are actively exploited bugs in the mix, cleaner intrusion paths, smarter automation, and a long patch list waiting behind them. Some attacks are getting more capable. Others

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Linux Backdoor Abuses STUN Protocol, Exploits Dozens of Flaws

ClingSTUN operates as a back-connect proxy backdoor, sets up persistence, and contains exploits for self-propagation. The post Linux Backdoor Abuses STUN Protocol, Exploits Dozens of Flaws appeared first on SecurityWeek.

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250,000 Impacted by Data Breaches at New Jersey, Texas Healthcare Firms

Hackers stole patient information from Clover Health Investments and AngMar Management Services in July. The post 250,000 Impacted by Data Breaches at New Jersey, Texas Healthcare Firms appeared first on SecurityWeek.

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The Credential Layer Is Expanding Faster Than Security Teams Can See It

Every modern enterprise depends on credentials. This is how humans, systems, and now AI, all connect to data, services, and each other securely. GitGuardian helps secure that credential layer through three connected capabilities: Detect, Remediate, and Prevent. The journey starts with detection, because organizations first need to understand what credentials exist, where they live, and what they

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Realtek Jungle SDK Exploit Attempts Deliver Cling Botnet With STUN-Based C2

Threat actors have been observed attempting to exploit a now-patched critical security flaw impacting the Realtek Jungle software development kit (SDK) to deploy a botnet malware called Cling. "Cling is notable not because it introduces a new propagation technique, but because it repurposes ordinary STUN behavior into a practical command-and-control channel," Nozomi Networks said in a report

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Exploitation Hits Rejetto HFS Vulnerability Discovered by AI 

CVE-2026-61500 allows attackers to recover the session-cookie signing key and gain administrative access and RCE. The post Exploitation Hits Rejetto HFS Vulnerability Discovered by AI  appeared first on SecurityWeek.

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Senate Passes Bipartisan Bill to Strengthen Healthcare Cybersecurity

More than 730 cyber breaches affected over 270 million Americans last year, costing an average of $10 million per breach. The post Senate Passes Bipartisan Bill to Strengthen Healthcare Cybersecurity appeared first on SecurityWeek.