’Security is when everything works the way I expect it to.’

Daniel Gruss is a security researcher at TU Graz and has been instrumental in discovering (and getting rid of) numerous computer security vulnerabilities in recent years. Daniel Gruss is a computer security expert. Image source: Lunghammer - TU Graz News+Stories: You're a security researcher and you deal with the security of computer systems. So, the first question is: what is security?. Daniel Gruss: When a system behaves the way I want and expect it to. It doesn't matter whether it's a computer system or real life. In real life, for example, this could be that I expect not to get sick.