Field notes
Dispatches on encryption, privacy, and operational security — from the team behind Ciphar.

Learn how to send voice messages on iOS, Android, and desktop. Get tips on quality, etiquette, and sending secure, private voice notes that self-destruct.

Go beyond the basics of aes 256 encryption. Learn about GCM, key derivation (PBKDF2), IV handling, and secure browser implementation for zero-knowledge apps.

Discover the top 10 secret chat app for lovers in our 2026 privacy guide. Keep your conversations private & secure with these trusted solutions.

Explore self destructing messages: understand how they work, their security limits, and choosing the right tools. Guide for journalists, lawyers, & execs.

Learn what client side encryption is and how it provides true zero-knowledge security. This guide covers AES-GCM, threat models, and how it protects your data.

Discover what is an encrypted message, how it works, and why it's crucial for privacy in 2026. Our guide explains encryption simply.

Find the best private chat for free with our guide. Learn to evaluate security, compare encrypted apps, and have truly anonymous conversations today.

Master secure data exchange principles & best practices. Essential guide for journalists, lawyers, and security pros to protect sensitive information in 2026.
See a real encrypted message example with ciphertext, IV, and auth tag. Learn how AES-256-GCM and zero-knowledge systems work in this practical guide.

Learn how to send anonymous messages safely. This guide covers threat models, secure methods, and the legal risks of false anonymity to protect your identity.

Learn how to mark message as unread on popular apps in 2026. Understand its privacy implications and how it differs in secure chats.

Learn how to leave a note securely using ephemeral, zero-knowledge tools. Our guide covers creating private channels, safe key sharing, and best practices.

Learn the core principles of data protection in the cloud. This guide covers threat models, encryption, and compliance for securing your sensitive data.