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Privacy’s Defender: My Thirty-Year Fight Against Digital Surveillance

Computer security and the lack of computer security is a fundamental issue that underpins much of how the Internet does (and doesn't) function. Many of the policy issues that EFF works on are linked to security in deep ways including privacy and anonymity, DRM, censorship, and network neutrality.

EFF works directly on a wide range of security issues including increased deployment of cryptographic protocols through projects like Certbot; improving the security of those protocols; offering legal assistance to researchers through our Coders' Rights Project; offering practical security advice to activists through the surveillance self-defense project; and working on the development of new security standards.

Security Highlights

vintage keys in a web of nodes

Encrypting the Web

인터넷 세상은 안전하지 않은 HTTP 에서 보다 더 안전한 HTTPS 프로토콜으로 대부분 옮겨갔습니다. 서버에서 당신의 브라우저로 웹페이지를 가져다주기 위해 모든 웹 서버들은 이러한 두 가지 프로토콜 중 하나를 사용합니다. 하이퍼텍스트 전송 통신규약(HTTP)은 그 내용을 중간에서 가로채거나 몰래 엿볼 수 있게끔 하는 심각한 문제점들을 가지고 있습니다. 하이퍼텍스트 보안 전송 통신규약(HTTPS)은 이러한...

Coders' Rights Project

EFF's Coders' Rights Project protects programmers and developers engaged in cutting-edge exploration of technology. Security and encryption researchers help build a safer future for all of us using digital technologies, but too many legitimate researchers face serious legal challenges that prevent or inhibit their work. These challenges come from laws...

Security Updates

How to Pick Your Password Manager

Phishing and data breaches are a constant on the internet. The single best defense against both is to use a password manager to generate and automatically fill a unique password for every site. There are free options, and even ones built into your operating system or browser. We can help...
A hand holding a cellphone showing a verification screen and ACCESS DENIED in the background.

So, You’ve Hit an Age Gate. What Now?

EFF is against age gating and age verification mandates, and we hope we’ll win in getting existing ones overturned and new ones prevented. But mandates are already in effect, and every day many people are asked to verify their age across the web, despite prominent cases of sensitive data getting...
Bullhorn with "2025 Year in Review" coming out of it in bold letters

Surveillance Self-Defense: 2025 Year in Review

Our Surveillance Self-Defense (SSD) guides, which provide practical advice and explainers for how to deal with government and corporate surveillance, had a big year. We published several large updates to existing guides and released three all new guides. And with frequent massive protests across the U.S., our guide to attending...

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