They always just pop right off when I peel up an edge, the plastic of the case is always way more thick and durable than these stupid little security tabs. The ones I hate are the cardboard fold-out cases with clear trays, and they put the security sticker BEHIND the clear tray, where it's visible against the cardboard background that it's GLUED onto...there is no way to get rid of it.
But more than that, I hate the companies that feel like if they don't seal every single edge of the case with those security stickers, people will be opening packaging and stealing discs from the store, all day long. I hate having to pull all that crud off the case, just to get into it.