Anon playing a dangerous game with management.
It's all well and good until they find you, figure out what you've been doing (or rather not doing), then fire you and attempt to sue you for damages.
CYA. Make at least some attempts to be noticed. If they do notice you, at least you got a little bit of easily excusable free time - if they don't, now you get the easy life AND a paper trail so they can't say "why didn't you try to tell us".