Exploitation of Exchange Server spreads rapidly across the globe. The US mulls its response to Russia over the SolarWinds compromise (and to China over Exchange Server hacks).

Threat actors rush to exploit Exchange Server vulnerabilities before victims get around to patching–it’s like a worldwide fire sale. Rick Howard digs into third party platforms and cloud security. Robert M. Lee from Dragos shares insights on the recent Florida water plant event. The US mulls some form of retaliation against Russia for the SolarWinds supply chain campaign, and it will also need to consider how to respond to China’s operations against Exchange Server. (And another Chinese threat actor may have been exploiting SolarWinds late last year.)

For links to all of today’s stories check out our CyberWire daily news brief:

https://www.thecyberwire.com/newsletters/daily-briefing/10/44