Blockchain.info is not that great of a wallet. In general, you want to stay away from the online wallets. They are prone to hacks and if someone is to hack the system, they can easily access countless amounts of bitcoin from people. Instead, you should turn to using an offline wallet. I use electrum. Everything has been pretty safe as long as I've been using it. There have been a few security flaws, but they've been quickly fixed by the devs and the reminder to update also pops up in the "News" section of the Bitcointalk header. @OP, I suggest you use some offline wallet. Don't keep your coins in exchanges or online wallets as there are major flaws with these systems.