It encrypts your keystrokes in real time. SpyShelter Premium offers a unique, second layer of anti-keylogging protection, namely Keystroke Encryption (also known as keyboard encryption). SpyShelter constantly monitors all vulnerable areas in your operating system to ensure that your personal data is being protected from information-stealing malware. SpyShelter Premium is an effective and easy-to-use security application that helps you to protect your system against known and unknown custom compiled malware such as keystroke loggers.