Got nothing to hide? Think again. People often don’t think about their privacy until they need it — whether it’s when they’re arrested at a protest or pulled over for a routine traffic stop.

Surveillance is also a part of life, and it’s getting progressively more invasive. Government eavesdropping is increasing, carried out in wider secrecy, and it’s becoming far more localized.

There is no such thing as perfect security. But no matter who you are or where you are in the world, there are a lot of things you can do — many of which are simple — to protect yourself in this turbulent time. This simple advice will help to protect you against hackers and government surveillance.

Excerpt from the guide:

Your phone is your ultimate endpoint. You carry it everywhere and it usually holds your most personal secrets and sensitive information.

iPhones are widely seen as the most secure mainstream device today. Modern and newer Android devices usually come with strong security features, but there isn’t a universal implementation of encryption yet. Your iPhone encrypts as soon as you lock your screen (even the feds can’t access it), but Android devices have to be shut down entirely.

Here’s a guide on how to secure your iPhone, and here’s another guide for most Android devices