Very sad story. I'm very sorry to read that.

I just added a line that I never take any loans to one of a blank lines in my profile. Of course an intruder can easily change this line as well, but if some others will remember that I don't take loans this will make it harder to take a loan from my name. At least some can ask why and what happend and it will take time.

If there was a universal option for everyone to declare that they never take any loans it'd be even better. But making a separate topic for that would be too complicated and I don't see any easy way for that.

Maybe asking a signed message from known addresses of a user by default will be a good decision for loan service.