Microsoft Defender for Endpoint 安全漏洞

Microsoft Defender for Endpoint is an enterprise endpoint security platform provided by Microsoft Corporation in the United States. It helps protect against advanced persistent threats. There are security vulnerabilities in Microsoft Defender for Endpoint. Attackers can exploit these...

AI brands as bait: How threat actors are using the AI hype in social engineering

In this article 1. ChatGPT-themed lure leads to phishing kit collecting credit card data 2. Claude-themed phishing campaign collected credentials and access tokens 3. "Awesome AI Windows Plugin” malvertising deploys Vidar stealer 4. Fake DeepSeek V4 installers on GitHub delivered Vidar Stealer 5...

Closing the Sim-To-Real Gap: An Evaluation Framework for Autonomous Cyber Defense Configuration of Commercial EDR

Leading commercial endpoint detection and response EDR products have shifted from operator-configured rule sets to multi-component systems where autonomous AI components operate alongside, and increasingly in place of, operator-deployed policies. Autonomous defense agents using commercial EDR as...

CVE-2026-5082

Amon2::Plugin::Web::CSRFDefender versions from 7.00 through 7.03 for Perl generate an insecure session id. The generatesessionid function will attempt to read bytes from the /dev/urandom device, but if that is unavailable then it generates bytes using SHA-1 hash seeded with the built-in rand...

Synthetic APTs: The Collapse of TTP-Based Attribution

Cyber Threat Intelligence CTI attribution relies on identifying the Tactics, Techniques, and Procedures TTPs that distinguish one threat actor from another. This approach presupposes that each adversary leaves a recognizable operational fingerprint. This work investigates whether AI driven...

ZERO-APT: A Closed-Loop Adversarial Framework for LLM-Driven Automated Penetration Testing under Intelligent Defense

LLM-driven automated penetration testing agents are typically evaluated against static targets that neither detect nor respond to attacks, so their behavior under intelligent defense remains untested. The causal consistency of multi-step attack chains likewise hinges on unstable LLM reasoning, an...

Microsoft is named a Leader in the 2026 Gartner® Magic Quadrant™ for Endpoint Protection

As threats become more coordinated and faster to execute, endpoint protection has become the proving ground for modern defense. For the seventh consecutive time, Microsoft has been named a Leader in the 2026 Gartner® Magic Quadrant™ for Endpoint Protection. We believe this reflects both the...

Microsoft is named a Leader in the 2026 Gartner® Magic Quadrant™ for Endpoint Protection

As threats become more coordinated and faster to execute, endpoint protection has become the proving ground for modern defense. For the seventh consecutive time, Microsoft has been named a Leader in the 2026 Gartner® Magic Quadrant™ for Endpoint Protection. We believe this reflects both the...

Microsoft Slams Public Zero-Day Disclosures Amid GitHub Researcher Account Removal

Microsoft has come out strongly in favor of Coordinated Vulnerability Disclosure CVD, urging the research community to share their findings and give affected vendors an opportunity to better understand the impact and address them before they are publicly disclosed. The development comes after a...

Malicious code in clobprice.api (npm)

A campaign of npm packages sharing a common dropper clob.js that downloads and persistently installs a Windows executable from IPFS on postinstall. The dropper fetches the binary from IPFS CID bafybeif3zkapj364ofnrvbty7oj5h5ufpxlp4s62usk3ulxrru35e3gssa via multiple public gateways Pinata,...

MAL-2026-4350 Malicious code in clobprice.api (npm)

A campaign of npm packages sharing a common dropper clob.js that downloads and persistently installs a Windows executable from IPFS on postinstall. The dropper fetches the binary from IPFS CID bafybeif3zkapj364ofnrvbty7oj5h5ufpxlp4s62usk3ulxrru35e3gssa via multiple public gateways Pinata,...

A week in security (May 18 – May 24)

Last week on Malwarebytes Labs: Update Chrome now: Critical bugs could let attackers run code Microsoft Defender vulnerabilities are being exploited in the wild TikTok, YouTube, and Roblox face scrutiny, but age gates won’t fix child safety Catch spyware in the act with Windows Webcam Monitoring...

CVE-2026-45498

Microsoft Defender Denial of Service Vulnerability...

CVE-2026-41091

Improper link resolution before file access 'link following' in Microsoft Defender allows an authorized attacker to elevate privileges locally...

CVE-2026-45584

Heap-based buffer overflow in Microsoft Defender allows an unauthorized attacker to execute code over a network...

Demystifying the Mythos or Disrupting Bugonomics? from Zero-Day Asymmetry to Defender Remediation Throughput

Recent demonstrations of large language models producing candidate and confirmed vulnerabilities in production software have renewed the narrative that AI will reshape offensive and defensive security. Headlines emphasize capability; they rarely interrogate costs and incentives. This paper examin...

Exploit for Link Following in Microsoft

Microsoft Defender Vulnerability Scanner 🛡️ CVE-2026-41091...

Windows Defender < 4.18.26040.7 DoS (CVE-2026-45498)

The Antimalware Platform version of Microsoft Windows Defender installed on the remote Windows host is prior to 4.18.26040.7. It is, therefore, affected by a denial of service vulnerability: - Microsoft Defender Denial of Service Vulnerability. CVE-2026-45498 Note that Nessus has not tested for...

Security Update for Windows Defender (May 2026) (CVE-2026-41091)

The Malware Protection Engine version of Microsoft Windows Defender installed on the remote Windows host is prior to 1.1.26040.8. It is, therefore, affected by a privilege escalation vulnerability: - Improper link resolution before file access 'link following' in Microsoft Defender allows an...

Exploit for Link Following in Microsoft

🛡️ CVE-2026-41091 - RedSun Microsoft Defender Elevation...