Finally, Investors should use secure software and hardware for their devices and regularly back up their data.
Seems a good idea but the best is do not back up your details like passwords or seed phrases on softwares. There are applications that offers backup and many people fall into this, backing up files on line is same as given away your data and that is why cold storage is the best, even 2FA by Google authenticator is said to be compromised at the moment.
To avoid scammers like this, Investors should also be wary of promises of unusually high returns and do not disclose any personal information or keys to anyone.
This is kind of scam actually affects airdrop hunters they usually fall for scams that ask them to link up there wallet to a particular site and this exposes there keys and compromises other coins in the wallet. The scam is old but still catches up with gullible people.