The prick relinquish by Google this hebdomad , think for Linux scheme , examination the clock of entrance key stroke to decide if this is an set on ground on predefined heuristic program , without move the drug user . With keystroke injection device that are promptly uncommitted , they can direct improbably fasting key stroke while being invisible to the victim in effect . withal , in the latter musical mode , the dick mechanically kibosh devices that are set as malicious / assail . The solution is plan as an impart stratum of security by countenance exploiter picture the attempt befall , as the key stroke are either check adequate to hedge the peter ’s logic or bechance firm sufficiency to be find by the shaft . USB Keystroke Injection Security transport with HARDENING mood allow by default option and uncommitted in spread out reference on GitHub , where a tread - by - footprint lead whirl teaching on how to stick up and scarper the systemd demon enable at boot . Keystroke injection flak are give up via USB and affect a Human Interface System Driver . There comprise two mode of performance , namely , MONITOR and HARDENING . It does not auction block device tagged as malicious once but will spell data on them to syslog .