Blockchain shouldn't be considered for use beyond a hot wallet for daily purchases, and even then I would suggest against holding more than you can afford to lose on there. Earlier this year, my Blockchain wallet was cracked by hackers and all funds were drained, though I only used the wallet as a hot wallet and I transferred all my funds to a Ledger a few months prior, and my password wasn't the longest. Even if you have an extremely long password that you don't use on any other website, and you're browsing the site from a secure computer, do not use it as even medium-term storage. Even though it's not the most secure medium of storage, it's still okay if you're trying to scan QR codes from a monitor or a location on-the-go to use funds.
Electrum's fine to use as long as you take the right precautions to ensure security, such as using an airgapped, fresh computer.
Also, always remember to save your generated seed or private key securely, so you don't have one point of failure in case you lose your main storage device. I have heard of people using bank safe deposit boxes and home safes to save a backup, and this is absolutely a precaution you should take if you're storing a significant amount of funds. You are your own bank after all-never cut corners. It's always best to be too prepared than too little.
I would stay away from Blockchain wallet. I have been using it few months back and I stopped after my balance on this wallet reached 10k$. I was not anymore able to send, but I could still receive. I tried many different browsers but it was exactly the same effect. I can't say if there was any technical issue or whatever, but very very strange that it happened once my balance there was over 10k.
I think as hot wallet to do daily small transactions, its something we can use.
And by the way, check their ToS, you will see that Blockchain is not anymore a place to trust.
What happend to your money? Were you able to export out your keys or is your money still stuck in your wallet?
I haven't heard of this before.
If you want to use the wallet with the big security. Come on all the wallets are same to use it you missed to keep the fund safe with all the private key secured wallets. I do not know wallets completely secured even you do the mistake.
Common mistakes like private key sharing and phishing site access is the biggest problems to get scammed. Here are suggestion. Electrum, Multibit. Blockchain and Exodus.
I think the biggest "mistake" is that people run their wallets on unsecured devices, which are either infected with clipboard malware/keyloggers. I'd associate phishing with exchanges such as binance, not really wallets.