Tag: malicious
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Malicious Repo Files Could Hijack Claude Code Sessions
Flaws Let Attackers Run Commands and Steal API Keys Before Trust Prompt. Check Point research found three critical flaws in Anthropic’s Claude Code that allow attackers to execute arbitrary commands and steal API keys through repository configuration files, before users see a trust prompt. The AI giant has patched all three vulnerabilities. First seen on…
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UAT-10027 Targets U.S. Education and Healthcare with Dohdoor Backdoor
A previously undocumented threat activity cluster has been attributed to an ongoing malicious campaign targeting education and healthcare sectors in the U.S. since at least December 2025.The campaign is being tracked by Cisco Talos under the moniker UAT-10027. The end goal of the attacks is to deliver a never-before-seen backdoor codenamed Dohdoor.”Dohdoor utilizes the DNS-over-HTTPS…
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UAT-10027 Targets U.S. Education and Healthcare with Dohdoor Backdoor
A previously undocumented threat activity cluster has been attributed to an ongoing malicious campaign targeting education and healthcare sectors in the U.S. since at least December 2025.The campaign is being tracked by Cisco Talos under the moniker UAT-10027. The end goal of the attacks is to deliver a never-before-seen backdoor codenamed Dohdoor.”Dohdoor utilizes the DNS-over-HTTPS…
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UAT-10027 Targets U.S. Education and Healthcare with Dohdoor Backdoor
A previously undocumented threat activity cluster has been attributed to an ongoing malicious campaign targeting education and healthcare sectors in the U.S. since at least December 2025.The campaign is being tracked by Cisco Talos under the moniker UAT-10027. The end goal of the attacks is to deliver a never-before-seen backdoor codenamed Dohdoor.”Dohdoor utilizes the DNS-over-HTTPS…
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UAT-10027 Targets U.S. Education and Healthcare with Dohdoor Backdoor
A previously undocumented threat activity cluster has been attributed to an ongoing malicious campaign targeting education and healthcare sectors in the U.S. since at least December 2025.The campaign is being tracked by Cisco Talos under the moniker UAT-10027. The end goal of the attacks is to deliver a never-before-seen backdoor codenamed Dohdoor.”Dohdoor utilizes the DNS-over-HTTPS…
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Fraudsters integrate ChatGPT into global scam campaigns
AI models are being folded into fraud and influence operations that follow long standing tactics. A February 2026 update to OpenAI’s Disrupting Malicious Uses of Our Models … First seen on helpnetsecurity.com Jump to article: www.helpnetsecurity.com/2026/02/26/openai-malicious-chatgpt-use-report/
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How to report suspicious activity to Spamhaus (with all the right info!)
Cybercriminals never rest but anyone can play a role in stopping them. Sharing malicious activity is one of the most important ways we can strengthen safety on the internet. Spamhaus Threat Intel Community brings individuals and organizations together to share threat data and block spam, phishing, and malware campaigns worldwide. Find out how you can…
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What is Polymorphic Malware?
Malware continues to evolve, becoming more sophisticated and harder to detect. One of the most challenging types is polymorphic malware, malicious software that constantly changes its code to evade detection by traditional security systems. In a world where cyber threats are growing in scale and complexity, understanding how polymorphic malware works and how to… First…
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Zoom Update Scam Infects 1,437 Users in 12 Days to Deploy Surveillance Tools
A dangerous new scam is targeting Zoom users by exploiting their trust in video meeting invites. Over just twelve days, 1,437 Windows users unknowingly installed a malicious version of the Teramind monitoring agent after visiting a fake Zoom meeting page designed to trigger silent downloads. The operation starts at uswebzoomus[.]com/zoom/ a domain mimicking Zoom’s legitimate interface. When opened, it displays…
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OpenAI Confirms Chinese Hackers Used ChatGPT in Cyberattack Campaign
OpenAI has confirmed that Chinese-linked operators misused ChatGPT as part of a broader campaign that blended cyber operations, online harassment, and covert influence tactics, according to its latest threat report “Disrupting malicious uses of AI.” While the models were not used to write exploits or break into networks directly, they were repeatedly abused to plan…
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Malicious Ads Bypass Google Ads Screening via New Campaign Platform Exploit
A sophisticated cloaking platform called 1Campaign, designed to help attackers run malicious Google Ads campaigns while evading detection. The service acts as a full”‘service infrastructure for malvertising, filtering out researchers and automated scanners to keep phishing and cryptocurrency drainer sites online for extended periods. Operated by a developer using the alias DuppyMeister, 1Campaign has been…
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New Dohdoor malware campaign targets education and health care
Cisco Talos discovered an ongoing malicious campaign since at least as early as December 2025 by a threat actor we track as “UAT-10027,” delivering a previously undisclosed backdoor dubbed “Dohdoor.” First seen on blog.talosintelligence.com Jump to article: blog.talosintelligence.com/new-dohdoor-malware-campaign/
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Microsoft Warns Developers of Fake Next.js Job Repos Delivering In-Memory Malware
A “coordinated developer-targeting campaign” is using malicious repositories disguised as legitimate Next.js projects and technical assessments to trick victims into executing them and establish persistent access to compromised machines.”The activity aligns with a broader cluster of threats that use job-themed lures to blend into routine developer workflows and increase the likelihood of code First seen…
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Malicious StripeApi NuGet Package Mimicked Official Library and Stole API Tokens
Cybersecurity researchers have disclosed details of a new malicious package discovered on the NuGet Gallery, impersonating a library from financial services firm Stripe in an attempt to target the financial sector.The package, codenamed StripeApi.Net, attempts to masquerade as Stripe.net, a legitimate library from Stripe that has over 75 million downloads. It was uploaded by a…
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Government Data Stolen After Hacker Jailbreaks Claude AI to Write Malicious Exploit Code
Tags: ai, breach, cyber, cyberattack, cybersecurity, data, exploit, government, hacker, malicious, vulnerabilityA hacker successfully manipulated Anthropic’s Claude AI to launch a sophisticated month-long cyberattack against Mexican government agencies. Between December 2025 and January 2026, the attacker utilized >>jailbreaking<< techniques to bypass safety guardrails, forcing the AI to identify vulnerabilities, generate functional exploit code, and exfiltrate sensitive data. The Jailbreak Method Cybersecurity firm Gambit Security revealed that…
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Cisco SD-WAN Zero-Day CVE-2026-20127 Exploited Since 2023 for Admin Access
A newly disclosed maximum-severity security flaw in Cisco Catalyst SD-WAN Controller (formerly vSmart) and Catalyst SD-WAN Manager (formerly vManage) has come under active exploitation in the wild as part of malicious activity that dates back to 2023.The vulnerability, tracked as CVE-2026-20127 (CVSS score: 10.0), allows an unauthenticated remote attacker to bypass authentication and obtain First…
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Fake Next.js job interview tests backdoor developer’s devices
The Microsoft Defender team has discovered a coordinated campaign targeting software developers through malicious repositories posing as legitimate Next.js projects and technical assessment materials, including recruiting coding tests. First seen on bleepingcomputer.com Jump to article: www.bleepingcomputer.com/news/security/fake-nextjs-job-interview-tests-backdoor-developers-devices/
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RAMP Forum Seizure Fractures Ransomware Ecosystem
Researchers suggest defenders monitor how these malicious groups re-form and leverage the useful threat intel to guide their next moves. First seen on darkreading.com Jump to article: www.darkreading.com/threat-intelligence/ramp-forum-seizure-fractures-ransomware-ecosystem
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Critical Cisco SD-WAN bug exploited in zero-day attacks since 2023
Cisco is warning that a critical authentication bypass vulnerability in Cisco Catalyst SD-WAN, tracked as CVE-2026-20127, was actively exploited in zero-day attacks that allowed remote attackers to compromise controllers and add malicious rogue peers to targeted networks. First seen on bleepingcomputer.com Jump to article: www.bleepingcomputer.com/news/security/critical-cisco-sd-wan-bug-exploited-in-zero-day-attacks-since-2023/
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Chinese cyberspies breached dozens of telecom firms, govt agencies
Google’s Threat Intelligence Group (GTIG), Mandiant, and partners disrupted a global espionage campaign attributed to a suspected Chinese threat actor that used SaaS API calls to hide malicious traffic in attacks targeting telecom and government networks. First seen on bleepingcomputer.com Jump to article: www.bleepingcomputer.com/news/security/chinese-cyberspies-breached-dozens-of-telecom-firms-govt-agencies/
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Malicious Next.js Repos Target Developers Via Fake Job Interviews
Linked to North Korean fake job-recruitment campaigns, the poisoned repositories are aimed at establishing persistent access to infected machines. First seen on darkreading.com Jump to article: www.darkreading.com/cyberattacks-data-breaches/malicious-nextjs-repos-developers-fake-job-interviews
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Caught in the Hook: RCE and API Token Exfiltration Through Claude Code Project Files 2025-59536 2026-21852
y Aviv Donenfeld and Oded Vanunu Executive Summary Check Point Research has discovered critical vulnerabilities in Anthropic’s Claude Code that allow attackers to achieve remote code execution and steal API credentials through malicious project configurations. The vulnerabilities exploit various configuration mechanisms including Hooks, Model Context Protocol (MCP) servers, and environment variables -executing arbitrary shell commands…
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Malicious NuGet Package Targets Stripe Developers
Tags: maliciousMalicious NuGet package mimicking Stripe’s library targeted developers First seen on infosecurity-magazine.com Jump to article: www.infosecurity-magazine.com/news/malicious-nuget-package-stripe-devs/
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Caught in the Hook: RCE and API Token Exfiltration Through Claude Code Project Files 2025-59536 –
y Aviv Donenfeld and Oded Vanunu Executive Summary Check Point Research has discovered critical vulnerabilities in Anthropic’s Claude Code that allow attackers to achieve remote code execution and steal API credentials through malicious project configurations. The vulnerabilities exploit various configuration mechanisms including Hooks, Model Context Protocol (MCP) servers, and environment variables -executing arbitrary shell commands…
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Malicious NuGet Packages Stole ASP.NET Data; npm Package Dropped Malware
Cybersecurity researchers have discovered four malicious NuGet packages that are designed to target ASP.NET web application developers to steal sensitive data.The campaign, discovered by Socket, exfiltrates ASP.NET Identity data, including user accounts, role assignments, and permission mappings, as well as manipulates authorization rules to create persistent backdoors in victim applications. First seen on thehackernews.com Jump…
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Hackers Exploit Cortex XDR Live Terminal for C2 Communications
Hackers can repurpose the Cortex XDR Live Terminal feature as a stealthy, EDR”‘trusted command”‘and”‘control (C2) channel, effectively turning a built”‘in response tool into a “living off the land” backdoor on protected endpoints. This abuse leverages the agent’s trusted communications and flexible remote”‘execution capabilities to blend malicious operations into normal Cortex XDR traffic. Cortex XDR Live…
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Threat Actors Exploit Apache ActiveMQ Vulnerability to Gain RDP Access, Deploy LockBit Ransomware
Threat actors recently abused a critical Apache ActiveMQ vulnerability to gain deep access to a Windows environment, eventually deploying LockBit ransomware over RDP. The attack shows how failing to patch CVE-2023-46604 can give adversaries repeat access and time to turn an initial foothold into full-domain impact. The exploit loaded a malicious Java Spring bean configuration XML file,…