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Microsoft Teams
Microsoft revokes 200 certs used to sign malicious Teams installers

By revoking 200 software-signing certificates, Microsoft has hampered the activities of Vanilla Tempest, a ransomware-wielding threat actor that has been targeting …

Patch Tuesday
Microsoft patches three zero-days actively exploited by attackers

On October 2025 Patch Tuesday, Microsoft released fixes for 175+ vulnerabilities, including three zero-days under active attack: CVE-2025-24990, CVE-2025-59230, and …

Patch Tuesday
October 2025 Patch Tuesday forecast: The end of a decade with Microsoft

A lot of classic software is reaching end-of-life (EOL) this month. Windows 10, Office 2016 and Exchange Server 2016 have survived after nearly a decade of service. Not far …

Windows 10
European Windows 10 users get an additional year of free security updates

Windows 10 users in the European Economic Area (EEA) will be able to receive extended security updates until October 14, 2026, without having to pay for them or to back up …

AI
Microsoft spots LLM-obfuscated phishing attack

Cybercriminals are increasingly using AI-powered tools and (malicious) large language models to create convincing, error-free emails, deepfakes, online personas, …

Microsoft 365 phishing
Microsoft disrupts the RaccoonO365 Phishing-as-a-Service operation, names alleged leader

Microsoft and Cloudflare have disrupted a Phishing-as-a-Service operation selling the RaccoonO365 kit for stealing Microsoft 365 account credentials. “Using a court …

Patch Tuesday
September 2025 Patch Tuesday forecast: The CVE matrix

September 2025 Patch Tuesday is now live: Microsoft, Adobe, SAP deliver critical fixes for September 2025 Patch Tuesday We work in an industry driven by Common Vulnerabilities …

ClickFix
Fake macOS help sites push Shamos infostealer via ClickFix technique

Criminals are taking advantage of macOS users’ need to resolve technical issues to get them to infect their machines with the Shamos infostealer, Crowdstrike researchers …

free GenAI AI courses
Free courses: Master AI tools from Microsoft, AWS, and Google

Learn how AI technologies can be applied to enhance security, create safe and responsible applications, develop intelligent agents, and improve information discovery. …

Patch Tuesday
Microsoft fixes “BadSuccessor” Kerberos vulnerability (CVE-2025-53779)

For August 2025 Patch Tuesday, Microsoft has released security updates resolving 100+ security vulnerabilities in its various solutions, including a relative path traversal …

Patch Tuesday
August 2025 Patch Tuesday forecast: Try, try again

July turned into a surprisingly busy month. It started slowly with a fairly ‘calm’ Patch Tuesday as I forecasted in my last blog. Although there were 130 new CVEs addressed …

Microsoft
Project Ire: Microsoft’s autonomous malware detection AI agent

Microsoft is working on a AI agent whose main goal is autonomous malware detection and the prototype – dubbed Project Ire – is showing great potential, the company …

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