How To Encrypt Files in Linux (--recipient "John Doe <email@example.com>")
Butterfleye - the smart security camera, with real time alerts and complete versatility.
GravityScan - a free Malware and Vulnerability scanner from WordFence
Cyber Essentials - a government-backed, industry supported scheme to help organisations protect themselves against common cyber attacks.
CurrPorts - Utility to scan open ports on a local Windows system.
PortScan - Utility to scan open ports on a local network.