
The U.S. had barely begun its recovery from the SolarWinds compromise, when another large-scale, state-sponsored cyberattack came to light in January. Like the SolarWinds hack, the Microsoft Exchange Server data breach exploited several zero-day vulnerabilities and has been attributed to a nation-state. But unlike SolarWinds, while the Microsoft attack was initially a targeted attack, it went on to create widespread collateral damage, leading some commentators to characterize it as “reckless.” Microsoft has attributed the compromise to a Chinese state-sponsored espionage group called “Hafnium.” Recent U.S. sanctions against Russia, in part motivated by the SolarWinds attack, have given rise to an […]