@MamaBas how do you read and send your emails ?
If you are using an email client (such as Thunderbird) on a laptop or PC, you could use the built in message filtering rules to separate out any future received emails, claiming to be from your friend, and automatically move hacked messages to your SPAM/Junk folder, or tag genuine messages as safe or move them to a folder for 'checked for safety' messages.
This can be achieved by setting filter rules to check the incoming message headers, where for example you might check that the "From:" field matches your friend's email address, and typically a hacked message will have a different "Return-Path:" field, so you then specify actions such as marking the hacked message as SPAM and move it to your JUNK folder.
Another tip, don't delete the hacked messages you have received, but instead use your email client tools to mark those messages as "Junk" or "SPAM", and move the messages to your Junk/SPAM folder. By doing that, your email client should 'learn' what you regard as unwanted, and should start identifying future messages with the same pattern of characteristics that your "marked as junk" messages contain, and automatically move those suspect new messages to your Junk folder.
