I think it is the last thing you should do spying his phone etc. But didn't you directly ask him what it was when this window popped up?
Anyway simply ask him what he did do last night to search a job, were he went etc. Or better still, tell him that you saw this window popping up and if it's the usual way to search jobs. However, if he didn't have a job since a very long time he might even consider doing this kind of jobs (unlikely)?
Anyway simply ask him what he did do last night to search a job, were he went etc. Or better still, tell him that you saw this window popping up and if it's the usual way to search jobs. However, if he didn't have a job since a very long time he might even consider doing this kind of jobs (unlikely)?