Structure of the talk:- Introduction & background- Introduction to interconnection network (What is it, how does it work)- Why is it important for all of us? - Where does it come from? (Basics to understand the problems)- Existing attacks (Focus on 3G/4G)- Who are the attackers? - What is done against them? (Focus on EU ENISA, USA FCC and GSMA work)- How do they get in (Real examples will be shown)- Attacks & Countermeasures- Introduction to network set-up (So the demonstration is understandable)- Presentation of high level attack scenarios for DoS / Fraud / Data Interception using the charging system- Demonstration of those attacks in testlab - User impacts (What do these attacks mean on a personal level?)- Countermeasures and fixes - Wrapping up- Outlook for 5G - Main security challenges - Summary- Q&A