content: How to protect mobile calls from man in the middle attack ? I've been targeted by hackers recently and I want to sure up my security and cover all bases for my business. I'm not looking for end to end encryption but enough that someone close by couldn't intercept my calls with a fake telephone mast. So far Skype is looking like a good option although I don't entirely understand how their encryption works. They say Skype to mobile isn't encrypted but if I use a VPN I think it will prevent any man in the middle attacks. I'm not concerned with it being unencrypted at the recipients end.  Does anyone have any recommendations, do I understand Skype correctly. I'm not a big computer guy.