Adaptavist Group breach spawns imposter emails as ransomware crew claims mega-haul

Adaptavist Group detected unauthorized access in late March using compromised credentials and has launched a forensic investigation; the company reports accessed systems contained typical business data and asserts no evidence of customer data exfiltration. A ransomware group calling itself "The Gentlemen" claims a complete compromise and large caches of stolen data on a dark web leak site, though those claims are unverified. Adaptavist also warned of third parties impersonating the company to send misleading correspondence and potential phishing.