https://www.bleepingcomputer.com/news/security/new-flowerstorm-microsoft-phishing-service-fills-void-left-by-rockstar2fa/

A new Microsoft 365 phishing-as-a-service platform called "FlowerStorm" is growing in popularity, filling the void left behind by the sudden shutdown of the Rockstar2FA cybercrime service.

First documented by Trustwave in late November 2024, Rockstar2FA operated as a PhaaS platform facilitating large-scale adversary-in-the-middle (AiTM) attacks targeting Microsoft 365 credentials.