North Korea-linked ScarCruft uses fake Microsoft Account alerts and ZIP files to deliver NarwhalRAT, a Python RAT built for ...

Microsoft Threat Intelligence analyzed a cryptocurrency clipper campaign that combines clipboard theft, wallet replacement, ...

Linuxでおなじみのコマンド群をWindowsで利用できるようにするCoreutils for Windows、Linuxコンテナを扱うWSL containers――MicrosoftはBuild ...

Steam is one of the most popular storefronts in PC gaming, but it turns out that the Steam Workshop might presently be ...

Microsoft discovered a self-spreading USB worm active since February that monitors clipboards for crypto wallets and routes stolen data through Tor.

A buffer overflow happens when a program writes more data into a memory buffer than the buffer can hold. The extra bytes land in adjacent memory, corrupting whatever was there. If an attacker controls ...

On June 24, 2026, Microsoft’s Digital Crimes Unit (DCU) facilitated the takedown, suspension, and blocking of domains that ...

Cybersecurity researchers at Microsoft have uncovered a sophisticated piece of malware that spreads through USB drives, intercepts cryptocurrency wallet ...

ThreatsDay Bulletin covers AI abuse, poisoned packages, phishing, macOS attacks, SD-WAN flaws, scams, and supply-chain ...

The malware program has been deployed across multiple sectors since April, helping to provide initial access sold to ransomware gangs.