Who wouldn’t have attempted at least once? The allure of the secret knowledge locked up in someone’s computer or online account coupled with the thrill of doing something you know is wrong seems like a standard page from the playbook of teenage hijinks, especially in this post-network world.
The Register discusses a survey of 1000 British students, a quarter of whom admit to at least having attempted to break into some system or other. I’m surprised the fraction isn’t higher, I imagine it might be given the inaccuracies of self reporting. What doesn’t surprise me is that the survey also found the motivations amongst those who tried to break into mostly Facebook accounts were largely innocuous, for fun or mischief.