WhatsApp is the world’s most popular messaging service, with around two billion users exchanging texts, photos, videos and documents, as well as making voice and video calls. Its end-to-end encryption means messages can only be viewed by the sender and any recipients: not even WhatsApp can read them. Updates to its privacy policy in 2021 (involving sharing data with parent company Facebook) caused millions to leave the app, but the new policy was widely misinterpreted – it only related to WhatsApp’s business features, not to personal messages. In the guide, you'll find tips on a number of potential risks such as scams, strangers and location sharing.