SpiderOAK looks interesting (5$ /150GB/1 month).
Yet, before making the rollback on the cloud drive, you have to know first that you are infected. If you do not know it, then the malware will survive on the online backup and still can infect the system via synchronization after the reboot.
@Andy Ful
Yes and no....
If he have sync folder with one drive and is inside shadow defender/ malware can get access to modify copy of it in cloud.. but not your files on disk so you can restart system which will wipe infection and you can sync again same files not touched to re-upload them ^^
Problem can be if you have yet connected in real time with yet other devices while malware can use cloud to infect this another devices.. however i dont think so malware will able use backuped files to start it on another system (if user dont open it)
@Andy Ful
Yes and no....
If he have sync folder with one drive and is inside shadow defender/ malware can get access to modify copy of it in cloud.. but not your files on disk so you can restart system which will wipe infection and you can sync again same files not touched to re-upload them ^^
...
All depends on what you choose to synchronize. For example, you can be infected by the malware that infects all your documents. If you store documents online (including the new documents) because you do not want to commit them in Shadowdefender, then you can be infected after the reboot. There are many scenarios available.
If you think about automatical infection after reboot, that is very improbable in the home environment. But, it is often possible in the targetted attacks via exploiting the firmware of peripherals (sound card, graphics card, printer, network adapter, router, etc.).
Yes exacly that why i said "yes and no" its depend how you configure and how work yuor cloud solution, cause some cloud work different.
Imo stand alone sync broken/infected document like word or PDF don't should harm your system till you don't open infected document again on not secured system/ or it not bypass your security again.