I have a question here. (Or 2...) What would you do if at some point, you see a resume of a colleague where he puts false experiences and misrepresenting qualifications ?
And what if someone 'discover' he has like a ton of admin/confident info of his previous job ?

I'll probably ask to interview the candidate and call them out on their false claims.

Basically try my best to not let them pass the interview.

@SidTheITGuy Ah but no let's say it is someone who is working in the same company but is planning to leave...

@kobenz Yes, and I am afraid he will do the same here. the person has like admin contracts, in & out's of personal... At what point is shit like this pure theft and fraud ?

@ostream Yes, I don't care of the past.

But the guy is planning to leave. I just want to prevent that he does the same here. Since he is a sysadmin, who knows what he copied...

Keep your mouth shut. There's nothing in it for you other than a world of trouble. Deny you saw anything.

@AlmondSauce That is what I am going to do.

But I still will try to make policies about usage and data on work-notebooks and devices.

So far we don't have any policy here.

@Grumm If you want to then by all means go for it - but it sounds like the sort of thing that will do very little to further your career as a dev, and add a lot to your plate in terms of useless meetings and administrative chaos. Personally I'd run a mile from that stuff, but YMMV.

Your company almost certainly*should* have this policy, but it's not on you to implement it.

@AlmondSauce Why not ? Yes I am a dev, but also the IT responsible.

We were only 2 and since 6 months 3 in our team to manage 90'ish coworkers.

In my previous work, I had to sign a document that I was not allowed to use code, tools or work in the same sector for al least 3 years.

There are enough who go to the competition and bring critical information with them.

So I think for the future, it is good that such policy get's in place. Not specific for his behavior, but for overall transparency to any user.

First remember honesty is never rewarded.

And then remember, with a few simple changes of circumstances outside your control, you could be where he is.

If he can actually do the job, what his references are don't matter.

test for that and only that.