(Reuters) - The U.S. Securities and Exchange Commission is asking technology and telecom companies how they handled the SolarWinds cyber attack in 2020, Bloomberg News reported on Tuesday, citing people familiar with the matter.

The hack of information technology company SolarWinds, one of the broadest and most sophisticated cyber attacks in the United States, was identified in December 2020 and gave away access to thousands of companies and government offices that used its products.