G PHYSICS
G06 COMPUTING; CALCULATING OR COUNTING
G06F ELECTRIC DIGITAL DATA PROCESSING
G06F21/00 Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
G06F21/50 Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems
G06F21/55 Detecting local intrusion or implementing counter-measures
G06F21/554 involving event detection and direct action