I read this as wallet file(s) having been corrupted. The way to avoid this is to use deterministic[1] wallets
However...
> We have reason to believe that one of Bitstamp’s operational wallets was compromised on January 4th, 2015.
makes it sound like one would be wise to short sell btc immediately.
[1] https://github.com/bitcoin/bips/blob/master/bip-0032.mediawi...
I read this as wallet file(s) having been corrupted. The way to avoid this is to use deterministic[1] wallets
However...
> We have reason to believe that one of Bitstamp’s operational wallets was compromised on January 4th, 2015.
makes it sound like one would be wise to short sell btc immediately.
[1] https://github.com/bitcoin/bips/blob/master/bip-0032.mediawi...