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

Find the right enterprise communications solution. This guide covers features, security models, evaluation criteria, and privacy-first use cases for 2026.

Learn how your phone number exposes you and what you can do to protect it. Our guide to phone number privacy covers threats, tools, and strategies for 2026.
Grasp the ChatGPT browser feature: understand its security risks & find privacy-first alternatives for sensitive tasks. Stay safe in 2026.

Learn what a data processing agreement (DPA) is, when you need one under GDPR, and what essential clauses to include. Our 2026 guide covers ephemeral services.

Learn how to get ISO 27001 certified with our step-by-step guide. Covers costs, timelines, audits, and special tips for zero-knowledge privacy services.

Learn how to delete chat in Ciphar permanently. Our 2026 guide covers manual burn, session expiry, and verifying total erasure on zero-knowledge servers.

Discover where are archived messages in Gmail, WhatsApp, and Signal. Learn how to find them quickly and understand why some chats disappear forever.

Understand pin to pin messaging: its history, security flaws, and how zero-knowledge channels offer private alternatives in 2026.

Compare the best encrypted messaging apps like Signal, WhatsApp, and Ciphar. Our 2026 guide helps high-risk users choose the right app based on threat models.

Discover the best secret chat app without phone number for private, anonymous communication in 2026. Explore top secure messengers.

Explore the best anonymous messaging apps for 2026. A security-focused review of tools for private, untraceable communication, with pros, cons, and use cases.

Learn how to encrypt text messages with our step-by-step guide. Explore E2EE apps, browser tools, and advanced methods to protect your privacy.

Learn how to make notes private with end-to-end encryption, zero-knowledge apps, and secure habits. Go beyond simple locks to truly protect your data.