In this episode of Service Course Lizzy and Tom speak to an ethical hacker about the ransomware attack on Garmin, and ask what the repercussions are for those of us who use Garmin devices. They also consider the wider issues of data security in cycling and find out why Strava became a problem for Area 51 and GCHQ. Tom also finds out about a prototype wheel that cleans up air pollution as it spins. There's more too as Tom and Lizzy take a look at the various different systems that helmets use to protect you from head injuries, and catch up with Ian Boswell to find out how his recovery from a career ending concussion is going. Service Course is supported by Science In Sport.  If you would like to get 25% off all Science In Sport's range of energy bars, gels and drinks to help fuel your ride and aid your recovery use the code SISCP25.