Privacy Guides

Actionable tutorials, best practices, and deep dives to secure your digital life and protect your personal data.

Encrypted Messaging Apps Compared 2026: Encryption Is No Longer Enough

Encrypted Messaging Apps Compared 2026: Encryption Is No Longer Enough

Open WhatsApp, Telegram, Signal, Messenger, Google Messages. Every one of these apps now displays the same …

SMS 2FA no longer protects anything: what to use instead

SMS 2FA no longer protects anything: what to use instead

On 9 January 2024, the official X account of the Securities and Exchange Commission, the US financial markets …

Cold wallet: the complete guide, from a scrap of paper to multisig on Qubes OS

Cold wallet: the complete guide, from a scrap of paper to multisig on Qubes OS

In 2023, researchers at Kaspersky took apart a Trezor hardware wallet bought from a respectable-looking online …

Which operating system for your security and privacy? Windows, macOS, Linux, Tails, Whonix and Qubes OS compared

Which operating system for your security and privacy? Windows, macOS, Linux, Tails, Whonix and Qubes OS compared

Choosing an operating system is not merely a matter of interface preference or software compatibility. It is …

Anonymous blockchains: how Monero, Zcash, and privacy coins really protect your transactions

Anonymous blockchains: how Monero, Zcash, and privacy coins really protect your transactions

Bitcoin was never anonymous. This is one of the most persistent — and most dangerous — misconceptions in the …

Password and Entropy: The Science Behind Your Security

Password and Entropy: The Science Behind Your Security

« Your password must contain 8 characters, an uppercase letter, a lowercase letter, a number, and a special …