APT28 3

• Russian APT28 Expands Arsenal with 'NotDoor' Outlook Backdoor Sep 3, 2025
• CERT-UA Discovers LAMEHUG Malware Linked to APT28, Using LLM for Phishing Campaign Jul 18, 2025
• Russia-linked APT28 use Signal chats to target Ukraine official with malware Jun 24, 2025