I feel no compassion for any who refuses to backup their data. I don't care if it's a mother who lost her family pictures or a hospital losing their records.
Us regular people have been told to back up our data for over 20 years now, and business and government for over 40 years.
If you have data backups, you simply reformat your computers, reinstall apps, and connect or load your backups, thereby mitigating these ransom attempts.
BACKUP YOUR DATA.
DO IT NOW.
Just DO IT!
I agree it's a bit strange!
I worked in an insurance company, everything is saved every hour and the total amount of data is saved on three other locations every day. To "hack" everything you' need to hack 4 different systems!