When a government or corporation near you is spying on all internet traffic then using Mullvad will make them unable to read yours by sending it encrypted to our servers.
Mullvad bypasses all blocks and filtering and gives you access to the real, uncensored internet.
Some internet service providers discriminate against certain protocols or give some actors preferential treatment to the detriment of all others. With Mullvad they can't do this as all traffic looks the same to them.
Insecure wireless networks
Public wireless networks in airports, train stations, cafés, schools, libraries, et cetera can be eavesdropped on over the air or by the operator. Mullvad prevents this by encrypting all traffic sent through such a network.
The media cartels have been given a legal right in the EU to secretly force internet service providers to identify the customer behind an IP address to the media companies. Mullvad hides your IP address, making this impossible.
The EU Data Retention Directive and similar laws force internet service providers to record what IP address everyone uses at any time and to keep this information available to governments. With Mullvad that address is only used with us and is not visible on the internet.