Cybercrime Groups Using Vishing and SSO Abuse in Rapid SaaS Extortion Attacks

Cybercrime Groups Using Vishing and SSO Abuse in Rapid SaaS Extortion Attacks

Cybersecurity researchers are warning of two cybercrime groups that are carrying out "rapid, high-impact attacks" operating almost within the confines of SaaS environments, while leaving minimal traces of their actions. The clusters, Cordial Spider (aka BlackFile, CL-CRI-1116, O-UNC-045, and UNC6671) and Snarky Spider (aka O-UNC-025 and UNC6661), have been attributed to high-speed data theft and extortion campaigns that share a remarkable degree of operational similarities. Both hacking groups are assessed to be active since at least October 2025, with the latter a native English-speaking crew sharing ties to the e-crime ecosystem known as The Com. "In most cases, these adversaries use voice phishing (vishing) to direct targeted users to malicious, SSO-themed adversary-in-the-middle (AiTM) pages, where they capture authentication data and pivot directly into SSO-integrated SaaS applicati

Source: https://thehackernews.com/2026/05/cybercrime-groups-using-vishing-and-sso.html