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News
TerminalFix turns a fake CAPTCHA into a stealthy network tunnel – 4sysops
3+ day, 14+ hour ago (23+ words) A new TerminalFix campaign is using counterfeit Cloudflare CAPTCHA pages to trick Windows users into pasting PowerShell commands that ultimately turn infected P...
KB5002914 breaks Excel copy and paste—admins face rollback dilemma – 4sysops
3+ day, 14+ hour ago (21+ words) Excel administrators are reporting that Microsoft’s KB5002914 security update breaks copy-and-paste, autofill, formula dragging, and in some cases VBA macros. T...
Microsoft Teams remote-support scam drops Node.js backdoor and pivots to domain controllers – 4sysops
4+ day, 18+ hour ago (22+ words) Microsoft has identified a hands-on intrusion campaign in which attackers impersonate IT staff through Microsoft Teams, persuade users to grant remote control,...
Open-source cleaner BleachBit hardens secure file wiping – 4sysops
5+ day, 3+ min ago (23+ words) BleachBit is a free, open-source privacy and system-cleanup utility for Windows, Linux, and macOS. It removes temporary files, browser traces, caches, logs, and...
Fake software installers use msiexec to bypass defenses and persist on Windows – 4sysops
6+ day, 17+ hour ago (21+ words) Microsoft is tracking an active fake software campaign that regenerates malicious archives behind familiar download filenames, then uses Windows components such...
Critical Cisco Nexus 9000 flaw opens unauthenticated root access – 4sysops
1+ week, 3+ day ago (24+ words) Cisco has patched CVE-2026-20212, a critical Nexus 9000 vulnerability rated 9.8 that lets an unauthenticated remote attacker execute code as root through TCP po...
Spring Ring turns Microsoft Teams calls into a path to domain compromise – 4sysops
1+ week, 3+ day ago (27+ words) Spring Ring attackers used fake Microsoft Teams support accounts to target more than 150 employees at at least 10 organizations, turning live calls into a way t...
Sift scans Microsoft 365, Slack, and Jira for forgotten secrets – 4sysops
1+ week, 4+ day ago (23+ words) Sift, a free open-source command-line tool from Stratus Security, searches for passwords, API keys, and other secrets across local storage, Windows file shares,...
TerminalFix turns fake Cloudflare CAPTCHAs into Windows network footholds – 4sysops
1+ week, 5+ day ago (23+ words) TerminalFix, a new ClickFix variant, is using fake Cloudflare Turnstile CAPTCHAs to make victims run PowerShell commands that install a persistent reverse tunne...
19 Chrome and Edge extensions turn into modular crypto stealers – 4sysops
2+ week, 2+ day ago (23+ words) A campaign dubbed Superior has compromised 19 Chrome and Edge extensions with a modular malware framework that can drain cryptocurrency wallets, steal credentia...