YubiKey Side-Channel Attack

This piece reflects on the need to defend against classes of attacks rather than specific instances, highlighting how certification and testing can miss unknown or deemed-improbable threats. Drawing on historical side-channel examples (from smart cards to EM leakage) and noting their growing accessibility and affordability, it warns that such techniques could soon be routine, eroding confidence in certified hardware (e.g., Infineon) and making exploitation easier over time.