Ransomware is a form of malware that encrypts a victim's files. The attacker then demands a ransom from the victim to restore access to the data upon payment.
Okay I'll admit ransomware is a bit over the top. I signed up with Autodesk fully knowing, or at least suspecting, that this was coming.
At the end of September non-paying Fusion users will only be able to export to mesh formats or save sketches as dxf..
I will be exporting my existing files as STEP to use in other software while it's still 'convenient'.
You may want to consider doing the same.