THE Security Affairs newsletter Round 579, authored by Pierluigi Paganini, highlights significant cybersecurity issues and events as of May 31, 2026. Key articles include: 1. ShinyHunters leaking data of 5 million Charter Communications customers; 2. A phishing campaign targeting Signal users; 3. The dismantling of a 17 million device botnet in the Netherlands; 4. GREYVIBE, a Russia-linked hacking group using AI against Ukraine; 5. A data breach exposing nearly 6 million Carnival customers' personal data.
Additional discussed topics encompass malware threats, vulnerabilities in software like FortiClient EMS and Microsoft SharePoint, cyberattacks on various entities, and the need for improved cybersecurity measures.