How AI Hallucinations Are Creating Real Security Risks

AI hallucinations are introducing serious security risks into critical infrastructure decision-making by exploiting human trust through highly confident yet incorrect outputs. When an AI model lacks certainty, it doesn’t have a mechanism to recognize that. Instead, it generates the most probable...

Windows Zero-Days Expose BitLocker Bypasses And CTFMON Privilege Escalation

An anonymous cybersecurity researcher who disclosed three Microsoft Defender vulnerabilities has returned with two more zero-days involving a BitLocker bypass and a privilege escalation impacting Windows Collaborative Translation Framework CTFMON. The security defects have been codenamed YellowKe...

New Fragnesia Linux Kernel LPE Grants Root Access via Page Cache Corruption

Details have emerged about a new variant of the recent Dirty Frag Linux local privilege escalation LPE vulnerability that allows local attackers to gain root access, making it the third such bug to be identified in the kernel within a span of two weeks. Codenamed Fragnesia , the security...

18-Year-Old NGINX Rewrite Module Flaw Enables Unauthenticated RCE

Cybersecurity researchers have disclosed multiple security vulnerabilities impacting NGINX Plus and NGINX Open, including a critical flaw that remained undetected for 18 years. The vulnerability, discovered by depthfirst, is a heap buffer overflow issue impacting ngxhttprewritemodule...

Microsoft's MDASH AI System Finds 16 Windows Flaws Fixed in Patch Tuesday

Microsoft has unveiled a new multi-model artificial intelligence AI-driven system called MDASH to facilitate vulnerability discovery and remediation at scale, adding that it's being tested by some customers as part of a limited private preview. MDASH, short for m ulti-mod el a gentic s canning h...

Azerbaijani Energy Firm Hit by Repeated Microsoft Exchange Exploitation

A threat actor with affiliations to China has been linked to a "multi-wave intrusion" targeting an unnamed Azerbaijani oil and gas company between late December 2025 and late February 2026, marking an expansion of its targeting. The activity has been attributed by Bitdefender with moderate-to-hig...

[Webinar] How Modern Attack Paths Cross Code, Pipelines, and Cloud

TL;DR: Stop chasing thousands of "toast" alerts. Join experts from Wiz to learn how hackers connect tiny flaws to build a "Lethal Chain" to your data—and how to break it. Register for the Strategic Briefing Here. Most security tools work like a smoke alarm that goes off every time you burn a piec...

Most Remediation Programs Never Confirm the Fix Actually Worked

Security teams have never had better visibility into their environments and never been worse at confirming what they fix stays fixed. Mandiant's M-Trends 2026 report puts the mean time to exploit at an estimated negative seven days. The Verizon 2025 DBIR puts median time to remediate edge device...

Microsoft Patches 138 Vulnerabilities, Including DNS and Netlogon RCE Flaws

Microsoft on Tuesday released patches for 138 security vulnerabilities spanning its product portfolio, although none of them have been listed as publicly known or under active attack. Of the 138 flaws, 30 are rated Critical, 104 are rated Important, three are rated Moderate, and one is rated Low ...

GemStuffer Abuses 150+ RubyGems to Exfiltrate Scraped U.K. Council Portal Data

Cybersecurity researchers are calling attention to a new campaign dubbed GemStuffer that has targeted the RubyGems repository with more than 150 gems that use the registry as a data exfiltration channel rather than for malware distribution. "The packages do not appear designed for mass developer...

Android Adds Intrusion Logging for Sophisticated Spyware Forensics

Google on Tuesday unveiled a new opt-in Android feature called Intrusion Logging for storing forensic logs to better analyze sophisticated spyware attacks. Intrusion Logging, available as part of Advanced Protection Mode, enables "persistent and privacy-preserving forensics logging to allow for...

New Exim BDAT Vulnerability Exposes GnuTLS Builds to Potential Code Execution

Exim has released security updates to address a severe security issue affecting certain configurations that could enable memory corruption and potential code execution. Exim is an open-source Mail Transfer Agent MTA designed for Unix-like systems to receive, route, and deliver email. The...

RubyGems Suspends New Signups After Hundreds of Malicious Packages Are Uploaded

RubyGems , the standard package manager for the Ruby programming language, has temporarily paused account sign ups following what has been described as a "major malicious attack." "We're dealing with a major malicious attack on RubyGems right now," Maciej Mensfeld, senior product manager for...

New TrickMo Variant Uses TON C2 and SOCKS5 to Create Android Network Pivots

Cybersecurity researchers have flagged a new version of the TrickMo Android banking trojan that uses The Open Network TON for command-and-control C2. The new variant, observed by ThreatFabric between January and February 2026, has been observed actively targeting banking and cryptocurrency wallet...

Webinar: What the Riskiest SOC Alerts Go Unanswered - and How Radiant Security Can Help

Why do the Riskiest SOC Alerts Go Unanswered? Security operations teams are drowning in alerts. But the real problem isn't always alert volume; it's the blind spots. The most dangerous alerts are the ones no one is investigating. A recent report from The Hacker News examined why certain high-risk...

Mini Shai-Hulud Worm Compromises TanStack, Mistral AI, Guardrails AI & More Packages

TeamPCP , the threat actor behind the recentsupply chain attack spree, has been linked to the compromise of the npm and PyPI packages from TanStack, UiPath, Mistral AI, OpenSearch, and Guardrails AI as part of a fresh Mini Shai-Hulud campaign. The affected npm packages have been modified to inclu...

Why Agentic AI Is Security's Next Blind Spot

Agentic AI is already running in production environments across many organizations today. It is executing tasks, consuming data, and taking actions — most likely without meaningful involvement from the security team. The industry conversation has largely framed this as a question of policy: allow...

Instructure Reaches Ransom Agreement with ShinyHunters to Stop 3.65TB Canvas Leak

American educational technology company Instructure, the parent company of Canvas, said it reached an "agreement" with a decentralized cybercrime extortion group after it breached its network and threatened to leak stolen information from thousands of schools and universities. In an update shared...

OpenAI Launches Daybreak for AI-Powered Vulnerability Detection and Patch Validation

OpenAI has launched Daybreak , a new cybersecurity initiative that brings together frontier artificial intelligence AI model capabilities and Codex Security to help organizations identify and patch vulnerabilities before attackers find a way in using the same issues. "Daybreak combines the...

iOS 26.5 Brings Default End-to-End Encrypted RCS Messaging Between iPhone and Android

Apple on Monday officially released iOS 26.5 with support for end-to-end encryption E2EE to Rich Communication Services RCS in beta as part of a "cross-industry effort" to replace traditional SMS with a more secure alternative. To that end, E2EE RCS messaging is rolling out to iPhone users runnin...

TeamPCP Compromises Checkmarx Jenkins AST Plugin Weeks After KICS Supply Chain Attack

Checkmarx has confirmed that a modified version of the Jenkins AST plugin was published to the Jenkins Marketplace. "If you are using Checkmarx Jenkins AST plugin, you need to ensure that you are using the version 2.0.13-829.vc72453fa1c16 that was published on December 17, 2025 or previously," th...

cPanel CVE-2026-41940 Under Active Exploitation to Deploy Filemanager Backdoor

A threat actor named MrRot13 has been attributed to the exploitation of a recently disclosed critical cPanel flaw to deploy a backdoor codenamed Filemanager on compromised environments. The attack exploits CVE-2026-41940, a vulnerability impacting cPanel and WebHost Manager WHM that could result ...

Hackers Used AI to Develop First Known Zero-Day 2FA Bypass for Mass Exploitation

Google on Monday disclosed that it identified an unknown threat actor using a zero-day exploit that it said was likely developed with an artificial intelligence AI system, marking the first time the technology has been put to use in the wild in a malicious context for vulnerability discovery and...

⚡ Weekly Recap: Linux Rootkit, macOS Crypto Stealer, WebSocket Skimmers and More

Rough Monday. Somebody poisoned a trusted download again, somebody else turned cloud servers into public housing, and a few crews are still getting into boxes with bugs that should’ve died years ago — the same old holes, same lazy access paths, same “how the hell is this still open” feeling. One...

Your Purple Team Isn't Purple — It's Just Red and Blue in the Same Room

Defending a network at 2 am looks a lot like this: an analyst copy-pasting a hash from a PDF into a SIEM query. A red team script is being rewritten by hand so the blue team can use it. A patch waiting on a change-approval window that's longer than the exploitation window itself. Nobody in that...

Fake OpenAI Privacy Filter Repo Hits #1 on Hugging Face, Draws 244K Downloads

A malicious Hugging Face repository managed to take a spot in the platform's trending list by impersonating OpenAI's Privacy Filter open-weight model to deliver a Rust-based information stealer to Windows users. The project, named Open-OSS/privacy-filter, masqueraded as its legitimate counterpart...

Ollama Out-of-Bounds Read Vulnerability Allows Remote Process Memory Leak

Cybersecurity researchers have disclosed a critical security vulnerability in Ollama that, if successfully exploited, could allow a remote, unauthenticated attacker to leak its entire process memory. The out-of-bounds read flaw, which likely impacts over 300,000 servers globally, is tracked as...

cPanel, WHM Release Fixes for Three New Vulnerabilities — Patch Now

cPanel has released updates to address three vulnerabilities in cPanel and Web Host Manager WHM that could be exploited to achieve privilege escalation, code execution, and denial-of-service. The list of vulnerabilities is as follows - CVE-2026-29201 CVSS score: 4.3 - An insufficient input...

TCLBANKER Banking Trojan Targets Financial Platforms via WhatsApp and Outlook Worms

Threat hunters have flagged a previously undocumented Brazilian banking trojan dubbed TCLBANKER that's capable of targeting 59 banking, fintech, and cryptocurrency platforms. The activity is being tracked by Elastic Security Labs under the moniker REF3076. The malware family is assessed to be a...

Fake Call History Apps Stole Payments From Users After 7.3 Million Play Store Downloads

Cybersecurity researchers have discovered fraudulent apps on the official Google Play Store for Android that falsely claimed to offer access to call histories for any phone number, only to trick users into joining a subscription that provided fake data and incurred financial loss. The 28 apps hav...

One Click, Total Shutdown: The "Patient Zero" Webinar on Killing Stealth Breaches

The hardest part of cybersecurity isn't the technology, it’s the people. Every major breach you’ve read about lately usually starts the same way: one employee, one clever email, and one "Patient Zero" infection. In 2026, hackers are using AI to make these "first clicks" nearly impossible to spot...

Quasar Linux RAT Steals Developer Credentials for Software Supply Chain Compromise

A previously undocumented Linux implant codenamed Quasar Linux RAT QLNX is targeting developers' systems to establish a silent foothold as well as facilitate a broad range of post-compromise functionality, such as credential harvesting, keylogging, file manipulation, clipboard monitoring, and...

One Missed Threat Per Week: What 25M Alerts Reveal About Low-Severity Risk

The dark secret of enterprise security operations is that defenders have quietly institutionalized the practice of not looking. This is not just anecdotal, but rather backed by a recent report investigating more than 25 million security alerts, including informational and low-severity, across liv...

New Linux PamDOORa Backdoor Uses PAM Modules to Steal SSH Credentials

Cybersecurity researchers have disclosed details of a new Linux backdoor named PamDOORa that's being advertised on the Rehub Russian cybercrime forum for $1,600 by a threat actor called "darkworm." The backdoor is designed as a Pluggable Authentication Module PAM-based post-exploitation toolkit...

Linux Kernel Dirty Frag LPE Exploit Enables Root Access Across Major Distributions

Details have emerged about a new, unpatched local privilege escalation LPE vulnerability impacting the Linux kernel. Dubbed Dirty Frag , it has been described as a successor to Copy Fail CVE-2026-31431, CVSS score: 7.8, a recently disclosed LPE flaw impacting the Linux kernel that has since come...

Ivanti EPMM CVE-2026-6973 RCE Under Active Exploitation Grants Admin-Level Access

Ivanti is warning that a new security flaw impacting Endpoint Manager Mobile EPMM has been explored in limited attacks in the wild. The high-severity vulnerability, CVE-2026-6973 CVSS score: 7.2, is a case of improper input validation affecting EPMM before versions 12.6.1.1, 12.7.0.1, and 12.8.0....

PCPJack Credential Stealer Exploits 5 CVEs to Spread Worm-Like Across Cloud Systems

Cybersecurity researchers have disclosed details of a new credential theft framework dubbed PCPJack that targets exposed cloud infrastructure and ousts any artifacts linked to TeamPCP from the environments. "The toolset harvests credentials from cloud, container, developer, productivity, and...

PAN-OS RCE Exploit Under Active Use Enabling Root Access and Espionage

Palo Alto Networks has disclosed that threat actors may have attempted to unsuccessfully exploit a recently disclosed critical security flaw as early as April 9, 2026. The vulnerability in question is CVE-2026-0300 CVSS score: 9.3/8.7, a buffer overflow vulnerability in the User-ID Authentication...

ThreatsDay Bulletin: Edge Plaintext Passwords, ICS 0-Days, Patch-or-Die Alerts and 25+ New Stories

Bad week. Turns out the easiest way to get hacked in 2026 is still the same old garbage: shady packages, fake apps, forgotten DNS junk, scam ads, and stolen logins getting dumped into Discord channels like it’s normal. Some of these attack chains don’t even feel sophisticated anymore. More like...

Day Zero Readiness: The Operational Gaps That Break Incident Response

Having an incident response retainer, or even a pre-approved external incident response firm, is not the same as being ready for an incident. A retainer means someone will answer the phone. Operational readiness determines whether that team can do meaningful work the moment they do. That...

PyPI Packages Deliver ZiChatBot Malware via Zulip APIs on Windows and Linux

Cybersecurity researchers have discovered three packages on the Python Package Index PyPI repository that are designed to stealthily deliver a previously unknown malware family called ZiChatBot on Windows and Linux systems. "While these wheel packages do implement the features described on their...

vm2 Node.js Library Vulnerabilities Enable Sandbox Escape and Arbitrary Code Execution

A dozen critical security vulnerabilities have been disclosed in the vm2 Node.js library that could be exploited by bad actors to break out of the sandbox and execute arbitrary code on susceptible systems. vm2 is an open-source library used to run untrusted JavaScript code inside a secure sandbox...

Mirai-Based xlabs_v1 Botnet Exploits ADB to Hijack IoT Devices for DDoS Attacks

Cybersecurity researchers have exposed a new Mirai-derived botnet that self-identifies as xlabsv1 and targets internet-exposed devices running Android Debug Bridge ADB to enlist them in a network capable of carrying out distributed denial-of-service DDoS attacks. Hunt.io, which detailed the...

MuddyWater Uses Microsoft Teams to Steal Credentials in False Flag Ransomware Attack

The Iranian state-sponsored hacking group known as MuddyWater aka Mango Sandstorm, Seedworm, and Static Kitten has been attributed to a ransomware attack in what has been described as a "false flag" operation. The attack, observed by Rapid7 in early 2026, has been found to leverage social...

The Hacker News Launches 'Cybersecurity Stars Awards 2026' — Submissions Now Open

For nearly 20 years, we at The Hacker News have mostly told scary stories about cyberspace — big hacks, broken systems, and new threats. But behind every headline, there’s a quieter, better story. It’s the story of leaders making tough calls under pressure, teams building smarter defenses, and...

Your AI Agents Are Already Inside the Perimeter. Do You Know What They're Doing?

Analysts recently confirmed what identity security teams have quietly feared: AI agents are being deployed faster than enterprises can govern them. In their inaugural Market Guide for Guardian Agents, Gartner states that “enterprise adoption of AI agents is accelerating, outpacing maturity of...

Google's Android Apps Get Public Verification to Stop Supply Chain Attacks

Google has announced expanded Binary Transparency for Android as a way to safeguard the ecosystem from supply chain attacks. "This new public ledger ensures the Google apps on your device are exactly what we intended to build and distribute," Google's product and security teams said. The initiati...

Windows Phone Link Exploited by CloudZ RAT to Steal Credentials and OTPs

Cybersecurity researchers have disclosed details of an intrusion that involved the use of a CloudZ remote access tool RAT and a previous undocumented plugin dubbed Pheno with the aim of facilitating credential theft. "According to the functionalities of the CloudZ RAT and Pheno plugin, this was...

Palo Alto PAN-OS Flaw Under Active Exploitation Enables Remote Code Execution

Palo Alto Networks has released an advisory warning that a critical buffer overflow vulnerability in its PAN-OS software has been exploited in the wild. The vulnerability, tracked as CVE-2026-0300 , has been described as a case of unauthenticated remote code execution. It carries a CVSS score of...

Critical Apache HTTP/2 Flaw (CVE-2026-23918) Enables DoS and Potential RCE

The Apache Software Foundation ASF has released security updates to address several security vulnerabilities in the HTTP Server, including a severe vulnerability that could potentially lead to remote code execution RCE. The vulnerability, tracked as CVE-2026-23918 CVSS score: 8.8, has been...