[xchip]

If you are hiring people that later need to be fired for doing porn, heroin, sexual harassment,... Maybe the problem is not them.

[dudul]

How do you filter for porn addiction during your interview process?

[lliamander]

What a wild assertion.

For many of these problems, the only way you might know ahead of time is if you did a really extensive background check. Such a process would mostly be a waste.

It's perfectly reasonable and fair to hire people, provide clear standards of conduct, and fire those who fail the standard.