Follow these steps to prevent your blockchain account from getting hacked:
1. First of all, verify your email address to recover your account in case your account gets hacked or you forget your password.
2. Add your phone number in your account settings for extra security.
3. Add an extra password for transactions. It can help you and prevent the hackers from spending your funds in case they get access to your account.
4. Always keep your notifications switched on , either/both by email and/or SMS so that you can track record of any changes made to your account !
5. Use 2 Factor Authorization .
6. Save and encrypt a copy of your private key or backup file. You can encrypt it using one of the software listed
Here7. Do not download software you do not trust on your computer.
8. Make sure you have an anti-virus software running, and keep it up-to-date
9. Write down your backup seed that blockchain provides when you sign-up for the wallet, do not copy it without encryption in a txt or such files.
10. Do not fall into phishing scams, an example of this is : People on social networks (Facebook, Twitter, Weibo, etc) claiming to be BlockChain. They setup pages with blockchain-like logos, then spread “promotion campaigns” that require users to give their private information (such as account mnemonic) to participate. As soon as they have this information, they sweep the funds away. Blockchain never asks for private information like mnemonic , backup file , private key and such .
Following these steps will prevent your account from being too vulnerable, but if you want your funds to be secure never use web-wallets for amounts over 0.1 BTC. Use either
Electrum or
MultiBit or if you want extra security for cold storage, use
Armory .
If you were helped by this post or if you think this post will be helpful for other members, feel free to leave me a tip here: YourBitcoinAddress
Fixed some typos and made some corrections and added some extra info, may wanna update the OP.