If all the chat about the Sony email hack and shelving of The Interview has got you worried about online security, then have a think about anonymous apps: where you can share, send and find out stuff, without everyone on your FB getting all up in your grill. We spoke to ASOS social expert Sedge Beswick (she's such an expert she's got a book out: 140 Ultimate Twitter LOLs) to ask her about the best. Here are her three recommendations, all downloadable while you pretend to wrap presents.