Federal officials stress unprecedented levels of coordination as lawmakers continue probe of SolarWinds

Senators on the Homeland Security Committee took their turn probing the federal response to the SolarWinds hack at a hearing that featured CISA, OMB and FBI officials citing extensive interagency cooperation, while lawmakers pressed on the need for more high-level direction and for upgrading the government’s overall approach to cyber defense.

“After the SolarWinds hack likely perpetrated by the Russian government our agencies were asked to self-analyze and review the effects of the attack when many did not have the...