Improve communication security with GnuPG and the OpenPGP smartcard.

SiriKali encrypts files and directories with just a few mouse clicks, without the inefficiency of fixed-size containers.

The Integrity Measurement Architecture adds important details to your audit logs, making it easier to track an intruder's footprints.

TLS encryption is wonderful if it is running over a reliable transport protocol like TCP; but if your needs call for the less reliable UDP transport, you'd better start learning about DTLS.

The danger and irritations of the modern web have unleashed a movement dedicated to creating a safer and simpler alternative. The old Gopher network and the new Gemini protocol have emerged as building blocks for this new "small Internet."

Decoupled application design gets in the way of secure communication, but a little known feature of DNS can provide message security.

Linux offers users a wide range of options for system configuration. With the help of the checksecurity tool collection, you can automatically monitor basic system settings.

Protect your system from unwanted visitors with two-factor authentication.

Lockdown mode makes your Linux system more secure and even prevents root users from modifying the kernel.