Privacy knowledge that matters
In-depth expert knowledge on smartphone security, digital self-determination and degoogled Android devices.
Telegram and law enforcement: why Telegram isn't a secure messenger
Telegram is widely believed to be secure — but it isn't end-to-end encrypted, and since the arrest of founder Pavel Durov it hands IP addresses and phone numbers to law enforcement. Here's what's really going on.
The ProtonMail Case: Why an Encrypted Provider Still Had to Hand Over Your IP
ProtonMail is considered secure — yet in 2021 the provider had to log an activist's IP address and hand it to the authorities. What really happened, and what end-to-end encryption does not protect.
Installing Whonix: Anonymous Browsing over Tor — the Complete Step-by-Step Guide
Whonix routes all your traffic through Tor and splits networking and applications across two virtual machines. Here's how to install it cleanly and securely — with signature verification.
When the State Leaves Security Holes Open: BSI, ZITiS and the Fight over Vulnerability Management
The BSI is supposed to close security holes — but other agencies want to keep them open for government spyware. Why that makes everyone less safe, and what you can do yourself.
VOID vs. Signal, WhatsApp & Threema: Which Messenger Really Protects You?
Signal, WhatsApp, Threema, VOID — we honestly compare which messenger really protects your data: phone number, metadata, server location and logging.
End-to-End Encryption Explained: Olm, Megolm & the Matrix Protocol
What is behind end-to-end encryption? We explain Olm (one-on-one chats), Megolm (groups) and why the Matrix protocol is the foundation of VOID.
Metadata: What Your Messenger Reveals About You — Despite Encryption
End-to-end protects the content — but who messages whom, when and how often often reveals more. How to minimize metadata and what VOID does differently.
GrapheneOS's Erase Code: How the Duress PIN Wipes Your Device When It Counts
GrapheneOS offers a PIN that instantly and irreversibly wipes your phone when entered — instead of unlocking it. We explain how this 'erase code' works technically, where its limits lie, and who it really makes sense for.
Chat Control: What's Behind the EU Proposal — and What a SaferPhone Really Changes
For years the EU has been debating mandatory message surveillance — known as "Chat Control." We explain what it is about and what a SaferPhone can actually do against it.
Signal vs. Threema: Which Messenger Protects You Better From Chat Control?
Both are end-to-end encrypted and therefore unaffected by the current Chat Control regulation. We compare the differences.
5 Concrete Steps to Protect Yourself From Chat Control Right Now
You don't have to wait for a law to protect your private messages. These five steps help right away.
GrapheneOS vs. Cellebrite: What the Leaked Documents Really Show
Leaked internal Cellebrite documents reveal how far forensic extraction tools actually get on GrapheneOS devices — and where they fail.
GrapheneOS vs. BKA & LKA: What German Investigators Can Really Do
Do the BKA and LKA use their own methods against encrypted smartphones, or do they rely on the same commercial tools as everyone else? An assessment based on public sources.
Removing the Camera & Microphone: How the Hardware Modification Works
The physical removal of the camera and microphone is SaferPhone's defining feature. We explain the process and why it cannot be reversed.
The Sandboxed Profile Explained: How SaferPhone Isolates Your Data
A core security feature of SaferPhone is the Sandboxed Profile. We explain how this isolation works on a technical level and what protection it offers.
What Is GrapheneOS? The Most Secure Android Operating System Explained
GrapheneOS is the foundation of every SaferPhone. We explain what sets this operating system apart from stock Android and why security researchers recommend it.
What Is a Secure Smartphone — and Why Do I Need One?
Modern smartphones send hundreds of data packets to Google, Meta, and other companies every day. We explain why that's a problem and what you can do about it.
Removing Google from Android: What It Really Takes
Simply disabling Google apps isn't enough. We explain what it really takes to make an Android device genuinely privacy-safe.
SaferPhone vs. Regular Android: An Honest Comparison
What restrictions do you really face? And which benefits outweigh them? An honest comparison, without the marketing speak.