As we say goodbye to privacy, some people are putting their faith in encryption. But theres only so much that encryption can do. Encryption can protect the contents of an email message, but it cant hide who sent the message and who received it. Even Apple has no problem giving law enforcement that kind of information to law enforcement, says John Defterios. We are getting to the point where the only way to keep information secret is to hide it from our phones, he says.”]
Source: https://www.csoonline.com/article/3136230/the-limits-of-encryption.html