In this guide, we walk you through verifying the legitimacy of an open source software package before installation. As the old adage goes, "Check yo sigs before you wreck yo gigs."

Modern technology has given those in power new abilities to eavesdrop and collect data on innocent people. Surveillance Self-Defense is EFF's guide to defending yourself and your friends from surveillance by using secure technology and developing careful practices.

Journalists and newsrooms are increasingly being targeted through their email. Virtually every "sophisticated" hack of an individual reporter or entire news organization starts with a relatively simple attack: phishing and spear phishing. Prepare yourself for this eventuality with our email hygiene guide.

Take a crash course in some of the tools you can use to analyze, manipulate, and scrub media metadata.

The browser extension Mailvelope provides users with a simple and accessible means to encrypt the content of their emails. This guide features the essentials you need to get started with your own Mailvelope setup.

So, you’ve been arrested at an event. You’re taken to the police station and your phone is confiscated. When you’re let out, you realize someone has gone through your digital belongings. What now?

From song lyrics to rolling dice, here's a quick reference guide for making it easier to choose a safe passphrase based on the devices and applications you're using.

A Virtual Private Network (VPN) is an essential tool for protecting your online activity. Figuring out which VPN to use and finding security among the snake oil can be a challenge. This guide will show you what to look for.

While attending an organized action, your mobile device is at risk of being tampered with by authorities. You can minimize the consequences of a mobile phone confiscation by following the steps in our visual guide.

Concerned about the privacy and security of your communications? Follow our guide to locking down Signal.

For media makers working in film, journalism, and the arts, data protection is essential. Learn how you can use encryption to build up your defenses, and protect your work.

Disk Utility, available exclusively on macOS machines, is optimized to create encrypted spaces on both your computer and external storage devices.

VeraCrypt, an open source tool available on all major operating systems, is well-suited to meet the data encryption needs of virtually any media team.

ProtonMail is a Switzerland-based email client that offers end-to-end encryption between its users by default. We cover some of its more advanced uses and configurations, and tackle some of its main issues head-on.

If you've ever been notified of a data breach involving your credentials for a website or app, you may already know that you need to change your password for that account. In this guide, we'll dive into why your password needs to change and what to change it to in order to prepare for the next breach.

If there’s one item in your possession housing the most information about you, it’s probably your phone. Keeping your information safe depends on learning a little more about how to choose your small computer, and how to care for it long term.

Prioritize privacy and security when surfing the web. Most of your internet usage happens through a web browser, so it's important to pick one that defends you online. In this guide, we'll go over different browser features, and which ones you should look for.

Pretty Good Privacy (PGP) is an open standard for encrypting and signing data, including email, between two PGP users. In this guide, we’ll go through the process of securely generating, storing, and using a PGP key pair in a hardware token.

One of the best ways to secure your accounts during login is to require a second factor — a second piece of information — beyond the password.

Normally when you take a photo on your smartphone, the photo is copied to the camera roll, making it available to other apps and backup services. By sending photos within Signal you can ensure your most sensitive photos are only visible to the person you send them to.