Don't use Blockchain.info wallet.
I cannot emphasise this enough. Blockchain.info wallet IS NOT by any means, safe. Just like any other web wallet, they have access to your private keys, encrypted or not. It is still possible for them to get the Bitcoins by capturing your passwords or just use a weak encryption method when encrypting the password. The 'security' features that blockchain.info wallet only protects against hackers who have your password or are trying to bruteforce your password but are not protecting your wallet against the hackers or employees who are targeting the server. A simple research would tell you how flawed the idea of blockchain.info is.
Yeah, no online wallet will ever be safe. Blockchain.info wallet can be useful for newbies, and maybe to store some chump change, but other than that it's pretty useless. Anyone holding relevant amounts of bitcoin inside blockchain.info is up for a harsh awakening, some day they will look at their accounts and it will be empty.
Remember to always save your BTC locally ideally in a computer not connected to the internet at all.