I just wanted to use blockchain.info for temp use
Just don't use it if you'll thinking to put big amount of bitcoins there for good. Don't use it as a storehouse, use other wallets that are even safer than bc.info. You can try greenaddress if you can't avail a hardware wallet.
As many others suggested, it is not recommended to use online wallets. But if you prefer web wallets over software or hardware ones, blockchain.info looks the best option in my opinion since it has lots of feature like for example the option to buy BTC and ETH directly from your wallet.
I'm using it because it's very handy and easy to use but it's only for small amount not with big amounts. Greenaddress is a good one which supports Segwit too.
Never tested yet green address wallet but for me i still feel safe to use electrum for lite version of bitcoin core..
You can backup seeds and private key and save anywhere in your computer or you can write down it into paper or notes..
And i was holding a good amount of bitcoin and until now never experience any issue.. the good thing you can use the latest segwit that you can reduce your transaction fee every time you transfer bitcoin unlike legacy wallet or non segwit wallet .
Just always remember use a wallet which you can backup the private key so that if the wallet lock down you can recover your wallet into other wallet with private key support..
Electrum is still safe after all and its developer Thomas is one of the most prominent person in the bitcoin economy and he has contributed a very big thing for providing this type of wallet. But with greenaddress you better try it out, it's a good wallet that allows you to support segwit as they are supporting it already. I find it the same thing with electrum, you can bump the fee if you get stuck so for others who are looking for alternative, not only with electrum have a try with greenaddress.