I don't own a Synology myself, but I've been tempted to pick up one of the two-bay units for some time now. It seems that those already in possession of one may want to give it the once over and maybe pull its connection to the web though, because someone's on a hacking bender.
From what I've read, there's been a spate of Cryptolocker-like hacks that have left people with no access to their newly encrypted files unless they hand over 0.6 Bitcoins. Apparently that's about $600 in semi-real money, and £350 in real cash.
Not cool. Not cool at all.