If you're investing long term, don't keep your coins in a Blockchain.info account. They can be secured with a strong password and 2FA, but that's not good enough. You need encrypted backups of your private keys, and doing so with Blockchain.info is not intuitive or easy for users.

Also (and this doesn't apply to storing coins but rather to spending them): With Blockchain.info, you are not in control of the software that signs and broadcasts your transactions. That opens you up to new attack vectors like MITM attacks.

It's much better to set up a Core wallet (or at least Electrum), encrypted with a very strong password. That way, you will already have an encrypted wallet file with all your private keys.

The next step is considering cold storage. It's not advisable to keep many bitcoins on online machines, in case malicious wallet-stealing software and/or keyloggers find their way onto your hard drive. By installing a wallet and generating addresses on an offline machine, you can avoid such attacks.

If you want to fully secure your coins stop using online wallets. You can never be sure if someone else holds your key, it's that simple.
Of course you can use 2fa, a dedicated email that you aren't using for anything else, a dedicated device that you're keeping relatively clean, like a htpc that is being used only to access cryptocurrency wallets. This would make you more secure than 90% of online wallet users, but still not as secure as those who chose a hardware wallet among other things.

I secure my BTC by means of changing the password of my wallet every month or when I think my wallet is at risk. You may also try to buy a hardware wallet and store it somewhere safe in your home, note: don't download anything suspicious to avoid a malware.

I secure my BTC by using a hardware wallet to keep it and writing the seed words and keep in a safe place. My suggestion is not to keep your BTC in an online wallet or exchanges. Even if the companies are doing well now, doesn’t mean there won’t be problems in the future.

It's not enough man, i think you should shut down the internet connection to your computer is the best way to avoiding thiefs or malware.

Using a complicate password and setting 2f are two basic steps to secure blockchain.info wallet. And have to be alert of phishing emails, never click on links in emails.

Don’t use public wifi and login to the wallet.

Sometimes its the users mistake for holding a bitcoin wallet. Putting your bitcoin wallet is not easy to be hack by others if you always make sure that you activate 2fa authenticator and keeping your private key somewhere safe that you only have access. Put some defenders, anti virus and anti malware in your pc

The top 3 most secured wallets which are recommended to hold large amount of Bitcoins are

• Hardware wallet
• Paper wallet
• Private wallet(wallets whose private key you own)

These wallets are most secure and are considered to be safer than others.

Myself I bought a separate laptop (aside from my PC), where I only visit the websites I trust 100%. I opened it when I created the wallets, and that's it. I will open it again in 10-20 years when I will be a millionaire. Of course, passwords are everywhere