Microsoft has unveiled two new open-source tools called RAMPART and Clarity to assist developers in better testing the security of artificial intelligence (AI) agents. RAMPART, short for Risk Assessment and Measurement Platform for Agentic Red Teaming, functions as a Pytest-native safety and security testing framework for writing and running safety and security tests for AI agents, covering

An unauthenticated attacker can exploit the command injection vulnerability to gain remote access to robotic systems, causing significant disruption to the environment.

The Grafana data breach was caused by a single GitHub workflow token that slipped through the rotation process following the TanStack npm supply-chain attack last week. [...]

The new Series A funding round brings the total raised by Quantum Bridge to $16 million.  The post Quantum Bridge Raises $8 Million for Quantum-Safe Key Distribution Solution appeared first on SecurityWeek.

The exploitation is mitigated by preventing the FsTx Auto Recovery Utility from starting when the WinRE image launches. The post Microsoft Rolls Out Mitigations for ‘YellowKey’ BitLocker Bypass appeared first on SecurityWeek.

Digital.ai’s latest threat report warns that agentic AI has erased the distinction between emerging and primary targets, enabling attackers to strike mobile apps within hours of release across every industry. The post AI-Powered App Attacks Are Faster, More Frequent and Harder to Stop appeared first on SecurityWeek.

Microsoft on Tuesday said it disrupted a malware-signing-as-a-service (MSaaS) operation that weaponized the company's Artifact Signing system to deliver malicious code and conduct ransomware and other attacks, compromising thousands of machines and networks across the world. The tech giant attributed the activity to a threat actor it calls Fox Tempest, which it said offered the MSaaS scheme

Identity checks alone can't stop attackers using stolen session tokens and compromised devices. Specops Software outlines why Zero Trust strategies increasingly depend on continuous device verification. [...]

1Password says AI coding agents should never hold persistent secrets, introducing a just-in-time credential model for OpenAI Codex designed to keep credentials out of prompts, code repositories, and model context. The post 1Password Teams With OpenAI to Stop AI Coding Agents From Leaking Credentials appeared first on SecurityWeek.

The researcher who found it says the vulnerability could have been chained with a prompt injection to exfiltrate data. The post Anthropic Silently Patches Claude Code Sandbox Bypass appeared first on SecurityWeek.

Drupal has announced a "core security release" scheduled for later today, warning that threat actors might develop exploits within hours of the update disclosure. [...]

Cybersecurity researchers have flagged fresh activity from a China-aligned threat actor known as Webworm in 2025, deploying custom backdoors that employ Discord and Microsoft Graph API for command-and-control (C2 or C&C) communications. Webworm, first publicly documented by Broadcom-owned Symantec in September 2022, is assessed to be active since at least 2022, targeting government agencies

CISA has added seven new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2008-4250 Microsoft Windows Buffer Overflow Vulnerability CVE-2009-1537 Microsoft DirectX NULL Byte Overwrite Vulnerability CVE-2009-3459 Adobe Acrobat and Reader Heap-Based Buffer Overflow Vulnerability CVE-2010-0249 Microsoft Internet Explorer Use-After-Free Vulnerability CVE-2010-0806 Microsoft Internet Explorer Use-After-Free Vulnerability CVE-2026-410

View CSAF Summary Schneider Electric is aware of a vulnerability in its EcostruxureTM Machine Expert HVAC product. The [EcostruxureTM Machine Expert HVAC](https://www.se.com/ww/en/download/document/EcoStruxureME_HVAC/) product is a programming software for Modicon M171-M172 logic controllers. Failure to apply the remediation provided below may risk in revealing sensitive information, which could result in disclosing protected source code, leading to loss of confidentiality. The following version

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, "identity dark matter" (the unseen, unmanaged elements of identity) now overshadows the visible elements 57% vs. 43%. And it couldn't have occurred at a worse time, with enterprises embracing Agent AI with both arms (and unfortunately, as

A compromised maintainer account was used to publish malicious package versions across the @antv namespace. The post Over 320 NPM Packages Hit by Fresh Mini Shai-Hulud Supply Chain Attack appeared first on SecurityWeek.

As enterprises rush AI projects into production, security teams are increasingly being forced into reactive mode. The post Caught Off Guard: Securing AI After It Hits Production appeared first on SecurityWeek.

PinTheft, a recently patched Linux privilege escalation vulnerability, now has a publicly available proof-of-concept (PoC) exploit that allows local attackers to gain root privileges on Arch Linux systems. [...]

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, and what detection actually requires. Download the CISO Expert Guide to Typosquatting in the AI Era → TL;DR  Typosquatting is no longer a user problem. Attackers now embed lookalike domains inside legitimate third-party scripts.

SecurityWeek spoke with several ICS security experts and companies about their most memorable experiences in the field. The post Real-World ICS Security Tales From the Trenches appeared first on SecurityWeek.

The speed and sophistication of cyberattacks have outpaced traditional defense methods. Please join us online today from 11AM -4PM ET for the Threat Detection & Incident Response Summit. Don’t miss this virtual event as we explore how to cut through alert fatigue, leverage AI and unified platforms to accelerate investigations, and apply actionable threat intelligence to […] The post Virtual Event Today: Threat Detection & Incident Response Summit appeared first on SecurityWee

The TeamPCP hacking group accessed the repositories after a GitHub employee installed a poisoned VS Code extension. The post GitHub Confirms Hack Impacting 3,800 Internal Repositories appeared first on SecurityWeek.

Microsoft on Tuesday released a mitigation for a BitLocker bypass vulnerability named YellowKey following its public disclosure last week. The zero-day flaw, now tracked as CVE-2026-45585, carries a CVSS score of 6.8. It has been described as a BitLocker security feature bypass. "Microsoft is aware of a security feature bypass vulnerability in Windows publicly referred to as 'YellowKey,'" the

GitHub has confirmed that roughly 3,800 internal repositories were breached after one of its employees installed a malicious VS Code extension. [...]

Microsoft has shared mitigations for YellowKey, a recently disclosed Windows BitLocker zero-day vulnerability that grants access to protected drives. [...]

While the numbers are modest, the crackdown on cybercrime involved 13 countries in the MENA region, the largest law enforcement collaboration to date.

Grafana Labs, on May 19, 2026, said an investigation into its recent breach found no evidence of customer production systems or operations being compromised. It said the scope of the incident is limited to the Grafana Labs GitHub environment, which includes public and private source code along with internal GitHub repositories. "After the initial assessment, we found that in addition to source

GitHub is investigating a breach of its internal repositories after the TeamPCP hacker group claimed to have accessed approximately 4,000 repositories containing private code. [...]

GitHub on Tuesday said it's investigating unauthorized access to its internal repositories after the notorious threat actor known as TeamPCP listed the platform's source code and internal organizations for sale on a cybercrime forum. "While we currently have no evidence of impact to customer information stored outside of GitHub's internal repositories (such as our customers' enterprises,