We've all had them. Emails from people who aren't who they say they are; phone calls pretending to be from someone else. 

It can be tricky knowing who and what to believe, and how to stay safe - especially online. 

Luckily, for the latest episode of The Buzz podcast we've enlisted the help of Professor Daniel Dresner, an expert in information, cyber security and governance. We ask Professor Dresner - a lecturer in the Department of Computer Science - how to protect ourselves online, what we should and shouldn't do, and what the future holds for the ever-evolving world of cyber security.