Microsoft Warns IRS Phishing Hits 29,000 Users, Deploys RMM Malware

Microsoft has warned of fresh campaigns that are capitalizing on the upcoming tax season in the U.S. to harvest credentials and deliver malware. The email campaigns take advantage of the urgency and time-sensitive nature of emails to send phishing messages masquerading as refund notices, payroll...

Star Blizzard Continues to Refine Their Tradecraft for Evasion and Stealth

Summary: The Russia-based threat actor, Star Blizzard, continues to utilize spear-phishing attacks successfully, targeting organizations and individuals across various geographical regions for information-gathering activities. Star Blizzard has improved its detection evasion capabilities since 20...

Star Blizzard increases sophistication and evasion in ongoing attacks

Microsoft Threat Intelligence continues to track and disrupt malicious activity attributed to a Russian state-sponsored actor we track as Star Blizzard formerly SEABORGIUM, also known as COLDRIVER and Callisto Group. Star Blizzard has improved their detection evasion capabilities since 2022 while...