Some good readings to start from to increase your knowledge.

Surveillance Self-Defense

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.

Electronic Frontier Foundation

The Electronic Frontier Foundation is the leading nonprofit organization defending civil liberties in the digital world. Founded in 1990, EFF champions user privacy, free expression, and innovation through impact litigation, policy analysis, grassroots activism, and technology development.

Tor Project : Anonymity Online

Tor is free software and an open network that helps you defend against traffic analysis, a form of network surveillance that threatens personal freedom and privacy, confidential business activities and relationships, and state security.


Cover the basic principles, including advice on how to use social networking platforms and mobile phones more safely. The Tool Guides offer step-by-step instructions to help you install and use the most essential digital security software and services.

Privacy Tools

Encryption against global mass surveillance. You are being watched. Private and state-sponsored organizations are monitoring and recording your online activities. We provides knowledge and tools to protect your privacy against global mass surveillance.

Privacy International

It's the right to know that your personal communications, medical records, metadata and bank details are secure, but it is also about ensuring that they are under your control.

© ONO sendai 2019