Swiss Firm Says It Has Accessed Servers of a SolarWinds Hacker

A Swiss cybersecurity firm says it has accessed servers used by a hacking group tied to the SolarWinds breach, revealing details about who the attackers targeted and how they carried out their operation. The firm, PRODAFT, also said the hackers have continued with their campaign through this month.

PRODAFT researchers said they were able to break into the hackers’ computer infrastructure and review evidence of a massive campaign between August and March, which targeted thousands of companies and government organizations across Europe and the U.S. The aim of the hacking group, dubbed SilverFish by the researchers, was to spy on ...