Adaptavist Group breach spawns imposter emails as ransomware crew claims mega-haul
Summary
The Adaptavist Group is investigating a security breach after an attacker gained access using stolen credentials. A ransomware group has claimed to have stolen a significant amount of data, and imposter emails related to the breach are already circulating.
IFF Assessment
This incident is bad news for defenders as it involves a successful breach, data exfiltration claims, and the emergence of phishing attempts exploiting the incident.
Defender Context
This incident highlights the ongoing risk of credential stuffing and the subsequent exploitation of legitimate access for data theft and ransomware deployment. Defenders should be vigilant against phishing campaigns that leverage stolen credentials or breach notifications, and ensure robust credential management and monitoring are in place.