Microsoft Open-Sources RAMPART and Clarity to Secure AI Agents During Development
Microsoft has unveiled two new open-source tools called RAMPART and Clarity to assist developers in better testing the security of artificial intelligence (A...
The Hacker News (Security) Articles
Updated 20 min ago · 50 articles from The Hacker News (Security)
Microsoft Takes Down Malware-Signing Service Behind Ransomware Attacks
Microsoft on Tuesday said it disrupted a malware-signing-as-a-service (MSaaS) operation that weaponized the company's Artifact Signing system to deliver mali...
Webworm Deploys EchoCreep and GraphWorm Backdoors Using Discord and MS Graph API
Cybersecurity researchers have flagged fresh activity from a China-aligned threat actor known as Webworm in 2025, deploying custom backdoors that employ Disc...
Agent AI is Coming. Are You Ready?
New Industry Data Just Released Suggests Not. On May 19th, 2026, Orchid Security released the results of our Identity Gap: Snapshot 2026. Among the findings,...
GitHub Breached — Employee Device Hack Led to Exfiltration of 3,800+ Internal Repos
GitHub on Tuesday said it's investigating unauthorized access to its internal repositories after the notorious threat actor known as TeamPCP listed the platf...
Typosquatting Is No Longer a User Problem. It's a Supply Chain Problem
AI-generated lookalike domains are now embedded inside the third-party scripts running on your web properties. Here's why your current stack can't see them, ...
Microsoft Releases Mitigation for YellowKey BitLocker Bypass CVE-2026-45585 Exploit
Microsoft on Tuesday released a mitigation for a BitLocker bypass vulnerability named YellowKey following its public disclosure last week. The zero-day flaw,...
Grafana GitHub Breach Exposes Source Code via TanStack npm Attack
Grafana Labs, on May 19, 2026, said an investigation into its recent breach found no evidence of customer production systems or operations being compromised....
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Trapdoor Android Ad Fraud Scheme Hit 659 Million Daily Bid Requests Using 455 Apps
Cybersecurity researchers have disclosed details of a new ad fraud and malvertising operation dubbed Trapdoor targeting Android device users. The activity, p...
DirtyDecrypt PoC Released for Linux Kernel CVE-2026-31635 LPE Vulnerability
Proof-of-concept (PoC) exploit code has now been released for a recently patched security flaw in the Linux kernel that could allow for local privilege escal...
The New Phishing Click: How OAuth Consent Bypasses MFA
In February 2026, a phishing-as-a-service (PhaaS) platform called EvilTokens went live. Within five weeks, it had compromised more than 340 Microsoft 365 org...
Drupal to Release Urgent Core Security Updates on May 20, Sites Told to Prepare
Drupal has issued an alert stating that it intends to release a "core security release" for all supported branches on May 20, 2026, from 5-9 p.m. UTC. "The D...
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