Microsoft Warns of Large-Scale Use of Phishing Kits to Send Millions of Emails Daily

Mar 14, 2023Ravie LakshmananThreat Intelligence / Cyber Attack

An open source adversary-in-the-middle (AiTM) phishing kit has found a number of takers in the cybercrime world for its ability to orchestrate attacks at scale.

Microsoft Threat Intelligence is tracking the threat actor behind the development of the kit under its emerging moniker DEV-1101.

An AiTM phishing attack typically involves a threat actor attempting to steal and intercept a target’s password and session cookies by deploying a proxy server between the user and the website.

Such attacks are more effective owing to their ability to circumvent multi-factor authentication (MFA) protections.

DEV-1101, per the tech giant, is said to be the party behind several phishing kits that can be purchased or rented by other criminal actors, thereby reducing the effort and resources required to launch a phishing campaign.

“The availability of such phishing kits for purchase by attackers is part of the industrialization of…