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AI code security with Claude Mythos Preview: Inside Tenable’s 500+ hours of testing for Project Glasswing

We spent 500+ hours and 40 billion tokens testing Anthropic’s Claude Mythos Preview for Project Glasswing. The takeaway: frontier AI won't run your code security program, but used well, it can make one even stronger.Key takeawaysFrontier AI dramatically scales security testing. In one month, Tenable dedicated 11 security experts and more than 40 billion tokens testing Claude Mythos Preview across source code analysis, exploit creation, binary reverse engineering, threat modeling, and dynamic te…

AWS partners with Anthropic and OpenAI to bring AWS Continuum into developer workflows

Customers have access to models that are continuously getting better with each new generation bringing larger context windows, stronger reasoning, and lower token costs. Getting the strongest AI-powered security will come from tools that combine the most relevant models with deep knowledge of a customer’s specific environment. AWS Continuum for code vulnerabilities (Preview) is built […]

​​Microsoft named a Leader in the KuppingerCole Leadership Compass for Cloud Native Application Protection Platforms (CNAPP)

Learn why KuppingerCole named Microsoft a Leader in its Leadership Compass: Cloud Native Application Protection Platforms report. The post ​​Microsoft named a Leader in the KuppingerCole Leadership Compass for Cloud Native Application Protection Platforms (CNAPP) appeared first on Microsoft Security Blog.

Cisco Advance Notification for Publication of August 5, 2026, Security Advisories

On August 5, 2026, the Cisco Product Security Incident Response Team (PSIRT) published the following advisories: Cisco Security Advisory CVE ID Security Impact Rating CVSS Base Score Cisco Catalyst SD-WAN Software Security Hardening Release: August 2026 CVE-2026-20303CVE-2026-20304CVE-2026-20310CVE-2026-20312CVE-2026-20313 Critical 9.9 Cisco IOS XE Software Security Hardening Release: August 2026 CVE-2026-20267CVE-2026-20268CVE-2026-20269CVE-2026-20270CVE-2026-20271CVE-2026-20272CVE-2026-20273 …

Cisco IOS XE Software Blocks Extensible Exchange Protocol Denial of Service Vulnerability

A vulnerability in the Blocks Extensible Exchange Protocol (BEEP) feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper handling when parsing a specific BEEP SOAP request. An attacker could exploit this vulnerability by sending a specific BEEP SOAP request to an affected device. A successful exploit could allow the attacker to cause the device to reload unexpected…

From open lures to cloaked gates: How a macOS ClickFix campaign learned to hide

A macOS ClickFix campaign shifted tactics from openly serving infostealer lures to hiding them behind a browser-fingerprinting gate. The change makes malicious infrastructure harder to detect while giving defenders new hunting opportunities. The post From open lures to cloaked gates: How a macOS ClickFix campaign learned to hide appeared first on Microsoft Security Blog.

ChainDrop supply chain compromise: Anatomy of a self-propagating worm

A credential-stealing worm hidden in more than 400 compromised npm packages automatically spread across software ecosystems by republishing malicious updates. This analysis details the attack chain, affected environments, and practical guidance for detection, hunting, and remediation. The post ChainDrop supply chain compromise: Anatomy of a self-propagating worm appeared first on Microsoft Security Blog.

Advance Zero Trust for AI: New tools and guidance to secure AI agents and DevSecOps

Microsoft expands its Zero Trust for AI strategy to enhance security for AI and DevSecOps environments with new tools and guidance. The post Advance Zero Trust for AI: New tools and guidance to secure AI agents and DevSecOps appeared first on Microsoft Security Blog.

128 Seconds to disruption: Microsoft Defender stops ransomware at QNET

Microsoft Defender automatically isolated a compromised QNET endpoint in 128 seconds, stopping a multi-stage attack before the payload could persist or spread. The post 128 Seconds to disruption: Microsoft Defender stops ransomware at QNET appeared first on Microsoft Security Blog.

Metasploit Pro 5.1 Released

Today marks the release of Metasploit Pro 5.1 - building upon the foundation laid in 5.0, adding new evasion primitives for HTTP Meterpreter payloads, support for tracking service hierarchies, a deeper and more interactive Network Topology view, and continuing our commitment to a modern, consistent UI. This release is powered by Metasploit Framework 6.5.Malleable C2 ProfilesOne of the most requested capabilities in modern red-team engagements is the ability to blend Meterpreter's network traffi…

CaptiveCrunch: Midnight Blizzard targets travelers worldwide for malware delivery and credential theft

Storm-2945, a sub-cluster of the Russian threat actor Midnight Blizzard, has been observed compromising the sign-in portals of hospitality-related organizations such as hotels since May 2026 in order to deliver malware to travelers and steal credentials in an operation we call CaptiveCrunch. The post CaptiveCrunch: Midnight Blizzard targets travelers worldwide for malware delivery and credential theft appeared first on Microsoft Security Blog.

Device Code Phishing Keeps Evolving. Here’s What to Watch For

Huntress is tracking an evolving wave of device code phishing that abuses trusted Microsoft 365 sign-in flows. Learn the signals defenders should watch for and how to respond.

Security Alert: [Updated] Microsoft Releases July 2026 Security Updates

Max-severity Exchange server flaw under active exploitation by Kremlin hackers

​​​​What’s new in Microsoft Security: July 2026

This month’s updates help security and IT teams secure their AI environments, use AI to defend, and strengthen the foundations that AI-powered operations depend on. The post ​​​​What’s new in Microsoft Security: July 2026 appeared first on Microsoft Security Blog.

Metasploit Framework 6.5 Released

Today we’re proud to announce that Metasploit Framework version 6.5 has been released. Over the past two years, with the help of countless contributors, we’ve added 422 new modules along with a whole slew of new features.Malleable C2 Profiles for HTTPOne of the latest and most requested features is support for Malleable C2 profiles across all current Meterpreter payloads. This feature enables users to load a standard profile into Meterpreter and change the shape of its HTTP(S) traffic. All Mete…

​​Better security starts with better questions

Learn how better questions, trusted AI, and human judgment help security leaders make confident decisions and build resilient systems. The post ​​Better security starts with better questions appeared first on Microsoft Security Blog.

The Next Evolution of MDR: Preemptive Defense and Agentic Investigation

For years, security operations followed a familiar sequence: detect suspicious activity, investigate what happened, and respond before it caused significant harm. That model developed in a threat landscape where defenders had considerably more time to establish the facts and decide what to do next. In 2019, the average data breach took 206 days to identify and another 73 days to contain, creating a total breach lifecycle of 279 days.As the time between initial access and attacker movement conti…

Updated Cyber Threat Actor Naming System

Update (July 30): A table listing the new names of select prominent threat actors was appended to this post. Introduction Today, Google Threat Intelligence Group (GTIG) will begin rolling out a unified naming schema for tracking threat actors. This new naming taxonomy represents an effort to standardize tracking across platforms and public reporting. Why are we Adopting a Different Naming System? Historically, Mandiant and Google’s Threat Analysis Group (TAG) maintained distinct tracking system…

ZDI-26-448: Bitdefender Total Security Shredder Link Following Local Privilege Escalation Vulnerability

This vulnerability allows local attackers to escalate privileges on affected installations of Bitdefender Total Security. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.3. The following CVEs are assigned: CVE-2026-6851.

Multiples vulnérabilités dans Microsoft Sharepoint (22 juillet 2026)

Le 14 juillet 2026, à l'occasion de sa mise à jour mensuelle, Microsoft a publié, entre autres, des correctifs pour deux vulnérabilités critiques affectant SharePoint. Les vulnérabilités CVE-2026-50522 et CVE-2026-58644 permettent à un attaquant non authentifié d'exécuter du code arbitraire à...

ZDI-26-446: Microsoft Windows WMI Providers Incorrect Authorization Local Privilege Escalation Vulnerability

This vulnerability allows local attackers to escalate privileges on affected installations of Microsoft Windows. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.0. The following CVEs are assigned: CVE-2026-50297.

ZDI-26-445: Microsoft Windows WMI Providers Incorrect Authorization Local Privilege Escalation Vulnerability

This vulnerability allows local attackers to escalate privileges on affected installations of Microsoft Windows. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.0. The following CVEs are assigned: CVE-2026-50325.

HOLLOWGRAPH: Turning Microsoft 365 Calendars into Covert Command-and-Control Channels

Group-IB uncovers HOLLOWGRAPH, a Windows malware that abuses Microsoft Graph API to exfiltrate files and receive commands from the attacker using Microsoft 365 calendar events, and DNS tunneling to refresh credentials used in C2 communication.