Forescout Finds Post-Quantum Key Exchange on More Than 19 Million of 160 Million SSH Servers, With OT at 16 Percent and Medical Devices at 6 Percent

Forescout's Vedere Labs measured post-quantum key exchange across more than 160 million internet-facing SSH hosts: support grew 72 percent in a year, to more than 19 million servers, with Forescout attributing most of the growth to OpenSSH upgrades. The same measurement puts operational technology at 16 percent, medical devices at 6 percent, and embedded Dropbear stacks at 3 percent. We read the two-speed migration as a capability question for the long-lived equipment defense estates run on, and what crypto-agility clauses should demand of 2027 contracts.