Mass Ransomware Hack Used IT Software Flaws, Researchers Say (3)

The hackers behind a mass ransomware attack exploited multiple previously unknown vulnerabilities in IT management software made by Kaseya Ltd., the latest sign of the skill and aggressiveness of the Russia-linked group believed responsible for the incidents, cybersecurity researchers said Sunday.

Marcus Murray, founder of Stockholm-based TrueSec Inc., said his firm’s investigations involving multiple victims in Sweden found that the hackers targeted them opportunistically. In those cases, the hackers used a previously unknown flaw in Miami-based Kaseya’s code to push ransomware to servers that used the software and were connected to the internet, he said.

The Dutch Institute ...