Security Affairs newsletter Round 546 by Pierluigi Paganini – INTERNATIONAL EDITION

Security Affairs’ International Edition for Round 546, written by Pierluigi Paganini, arrived on 19 October 2025 and highlights a busy week of security news curated for an international audience. The issue flags several notable developments, including Winos 4.0 hackers expanding to Japan and Malaysia with new malware, and Everest Gang taking credit for a Collins Aerospace breach that stemmed from cyber intrigue following airport chaos.

It also covers the SIMCARTEL operation, with Europol taking down a SIM-Box ring linked to 3,200 scams, and a critical WatchGuard Fireware flaw that could allow unauthenticated code execution. In data-breach news, Prosper disclosed a breach impacting 17.6 million accounts, while Sotheby’s disclosed a July data breach.

Other items include a PowerSchool hacker receiving four years in prison and Microsoft revoking 200+ fraudulent certificates used in a Fake Teams campaign, alongside various other security and vulnerability stories such as CISA adding flaws to its Known Exploited Vulnerabilities catalog.