Nosey Parker is a command-line program that finds secrets and sensitive information in textual data and Git history.
Some good tips and tricks along the way of setting up ssh on server and client
Surveillance Self-Defense is a digital security guide that teaches you how to assess your personal risk from online spying. It can help protect you from surveillance by those who might want to find out your secrets, from petty criminals to nation states. We offer guides to the best privacy-enhancing tools and explain how to incorporate protecting yourself against surveillance into your daily routine.
SSL Configuration Generator
JSON Web Tokens offer a simple and powerful way to generate tokens for APIs. These tokens carry a payload that is cryptographically signed. While the payload itself is not encrypted, the signature protects it against tampering. In their most common format, a "secret key" is used in the generation and verification of the signature. In this article I'm going to show you a less known mechanism to generate JWTs that have signatures that can be verified without having access to the secret key.
Dangerzone works like this: You give it a document that you don't know if you can trust (for example, an email attachment). Inside of a sandbox, Dangerzone converts the document to a PDF (if it isn't already one), and then converts the PDF into raw pixel data: a huge list of of RGB color values for each page. Then, in a separate sandbox, Dangerzone takes this pixel data and converts it back into a PDF.