Attackers conceal phishing lures using invisible Unicode characters

Microsoft says threat actors used ASCII smuggling with invisible Unicode tag characters to hide finance-themed phishing content and evade email security filters. The campaign peaked at up to 2.37 million daily messages and is still active, prompting advice to normalize or strip invisible code points before detection and AI processing. #Microsoft #ActiveCampaign #DefenderforOffice365

Read More
Week in review: Claude accounts compromised through infostealer, Patch Tuesday forecast

Last week’s cybersecurity news highlighted infostealer-driven account takeovers, active exploitation of flaws in products like Microsoft Exchange, SonicWall SMA 1000, PaperCut, and Sangoma Switchvox, and major data breaches affecting McKesson and Thomson Reuters. It also showed attackers abusing OAuth phishing, Microsoft Teams vishing, fake Claude apps, and AI-related tricks to steal credentials, evade detection, and interfere with malware analysis. #Anthropic #Claude #McKesson #MicrosoftExchange #SonicWallSMA1000 #PaperCut #SangomaSwitchvox #ThomsonReuters #RevStealer #SpringRing

Read More
Four REVSTEALER-Linked Modules Disable Windows Update and Defender to Run a Crypto Miner

Elastic Security Labs documented REVSTEALER and four previously unreported companion programs—ProManager, WinUpdate, SoftManager, and LockAppHost—that can remain on infected Windows systems after the main stealer deletes itself. The activity set steals credentials, hijacks crypto transactions, turns victims into a reverse proxy, and can disable Windows Update and Microsoft Defender before dropping…

Read More
Attackers Hijack MikroTik Routers Through Internet-Exposed SSH Without Authentication

Attackers are exploiting exposed MikroTik RouterOS SSH services to gain full administrative control without authentication, with CERT Polska warning that successful attacks have been observed since at least September 2. CERT and MikroTik urge immediate patching, service restrictions, and careful post-update checks for suspicious changes, while the reported two-flaw chain dubbed…

Read More