SolarWinds Believes Russian Group Took Data During Cyber-Attack

The Russia-linked hackers that compromised popular software by the Texas-based firm SolarWinds Corp. last year broke into email accounts and likely took data from the firm.

SolarWinds said it “found evidence that causes us to believe the threat actor exfiltrated certain information as part of its research and surveillance,” according to a regulatory filing on Friday. The hackers “accessed email accounts of certain personnel, some of which contained information related to current or former employees and customers,” the company said.

The filing presents the latest information in a cyber-attack announced in December that the U.S. has attributed to Russia’s foreign ...