Encryption is a process that scrambles your data using a cryptographic cipher and an encryption key.
The most secure modern cryptographic cipher is 256-bit AES.
AES stands for Advanced Encryption Standard, while 256-bit denotes how many possible encryption keys there are.
A 256-bit encryption key has 2^256 possible combinations of keys.
Tip: 2^256 is a mathematical shorthand for 2 multiplied by itself 256 times.
It is unimaginably difficult to guess the correct encryption key.
VPNs that offer 256-bit AES encryption are providing the best possible encryption for your data.
The sort of data that should not be logged includes browsing history, IP addresses, and connection timestamps.
This sort of information could potentially be used to associate your usage with your identity.
By not logging any data, the VPN provider proves that it cant track or sell your usage data.