Welcome to your weekly cyber security news round-up. This week we discuss the simple-seeming game that was exploiting users’ CPU to mine cryptocurrency. We look at the story of prisoners in the U.S. who hacked their prison-issued tablets, and discuss the teen who stole $5 million through SIM hijacking. We also consider some of the issues that can arise when you buy second-hand connected cars and, yet again, we cover another attack on the software supply chain.