Microsoft president Brad Smith criticized Amazon and Google‘s public response to the hack of SolarWinds computer network management software that compromised federal and corporate networks. 

Mr. Smith testified about Microsoft’s knowledge regarding the hack roiling federal networks at a series of congressional hearings this week including before the Senate Select Committee on Intelligence on Tuesday and a joint hearing of the House Committees on Oversight and Reform and Homeland Security on Friday. 

“Earlier this week, you told the Senate Intelligence Committee that it took courage for FireEye and SolarWinds to reveal this hack to authorities. What did you mean by that?” said Rep. Katie Porter, California Democrat, to Mr. Smith. 

“What I mean is, you have three companies here today because we have chosen to share information,” replied Mr. Smith at Friday’s hearing. “At Microsoft, we have published 32 blogs about what we observed and what we have seen. If I take my colleagues at Google and Amazon and put them together, they have published one blog. They didn’t get an invitation here as a result.”

Likely Russian hackers leveraged SolarWinds computer network management software to compromise…