Drive-by downloads that exploit browser vulnerabilities.
: Intercepts keystrokes through the operating system's standard programming interfaces. index of keylogger
A firewall can help by blocking suspicious outgoing data. Drive-by downloads that exploit browser vulnerabilities
Explore a deep dive into different technical architectures, such as User-Mode vs. Kernel-Mode, at Heimdal Security such as User-Mode vs. Kernel-Mode
Of course, modern malware knows that the index is its Achilles' heel. Sophisticated keyloggers now try to "de-index" themselves. They might:
Modern endpoint protection can detect the behavior of keyloggers and block them before they hook into your operating system.