Blackstone and other prominent US financial institutions were targeted by ransom-seeking hackers who used social engineering tactics to steal employee credentials, according to data from Google and internet intelligence firms.
The attacks, which relied on phone calls to compromise victims, affected dozens of businesses over the past month, highlighting the persistent vulnerability of major financial players to human-centric security breaches.
The disclosure adds to a growing list of high-profile cyber incidents in the financial sector.
In recent days, a series of cyberattacks has targeted some of the largest hedge funds on Wall Street, with Point72 Asset Management confirming to investors that it was the target of a security breach.
The intrusions have extended across the Atlantic, impacting private equity firms and other major players in the asset management space.
The use of social engineering, particularly phone-based scams, underscores a shift in attacker methodology toward exploiting human error rather than solely relying on technical vulnerabilities.