The Biden administration has now responded to two major cyberattacks—one from Russia, the SolarWinds attack, and the other from China, the so-called Hafnium Microsoft Exchange Server attack. Recently, Lawfare has run articles on both of these incidents—a piece from Dmitri Alperovitch, the co-founder and former CTO of CrowdStrike, and a piece from Alex Iftimie, a former Justice Department official and a lawyer at Morrison & Foerster. They joined Benjamin Wittes to discuss the Biden administration's response to the attacks. Were they appropriate, both in absolute terms and in relation to each other? Do they send the right messages to the countries in question? Do they go far enough? And what more do we want to see?