Cisco switches hit by reboot loops due to DNS client bug

Published on January 8, 2026

Multiple Cisco switch models are suddenly experiencing reboot loops after logging fatal DNS client errors, according to reports seen by BleepingComputer. [...]

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WhatsApp Worm Spreads Astaroth Banking Trojan Across Brazil via Contact Auto-Messaging

January 8, 2026
Cybersecurity researchers have disclosed details of a new campaign that uses WhatsApp as a distribution vector for a Windows banking trojan called Astaroth in attacks targeting Brazil.The campaign has been codenamed Boto Cor-de-Rosa by Acronis Threat Research Unit."The malware retrieves the victim's WhatsApp contact list and automatically sends malicious messages to each contact to further

VMware ESXi zero-days likely exploited a year before disclosure

January 8, 2026
Chinese-speaking threat actors used a compromised SonicWall VPN appliance to deliver a VMware ESXi exploit toolkit that seems to have been developed more than a year before the targeted vulnerabilities became publicly known. [...]