March 14, 2025

Phishing campaign impersonates Booking .com, delivers a suite of credential-stealing malware

Starting in December 2024, leading up to some of the busiest travel days, Microsoft Threat Intelligence identified a phishing campaign that impersonates online travel agency Booking.com […]
March 7, 2025

Malvertising campaign leads to info stealers hosted on GitHub

In early December 2024, Microsoft Threat Intelligence detected a large-scale malvertising campaign that impacted nearly one million devices globally in an opportunistic attack to steal information. […]
December 12, 2024

Frequent freeloader part II: Russian actor Secret Blizzard using tools of other groups to attack Ukraine

After co-opting the tools and infrastructure of another nation-state threat actor to facilitate espionage activities, as detailed in our last blog, Russian nation-state actor Secret Blizzard […]
October 9, 2024

File hosting services misused for identity phishing

Microsoft has observed campaigns misusing legitimate file hosting services increasingly use defense evasion tactics involving files with restricted access and view-only restrictions. While these campaigns are […]