I'm posting this thinking it might help someone to negate an infection with locky.
I run a tech repair company, lately saw a few of my customers hit with locky....
they didn't pay the ransom but spent an equal amount of cash employing my services to restore backups and customisations etc
anyway, dropbox offer a kind of workaround solution with dropbox pro(1TB) for €100 per yer, to make use of it you have to remap your user folder locations to reside within dropbox.
ie, after you install dropbox to c:\users\bill\dropbox
change location of each user folder, e.g. C:\users/bill/desktop to c:\users\bill\dropbox\desktop
once synced, if changed by locky, dropbox will hold all versions of files for 30 days- you have 30 days for a rollback
they also offer a service for unlimited rollback for extra €40 I think
move appdata folders at your peril(a safe mode job, and not recommended imo)
If bill has 2 computers, you can use
remap all folders this way
on pc1 options, tell it not to sync pc2 folder, vice versa
be weary of using long file/folder paths, can make copying files from crashed dives a nightmare
ideally, c:\users\dropbox\PC1\desktop, I don't know enough about folder permissions to be putting userfolders in dropbox on the root of the drive(c:\dropbox\pc1 etc), so I'm erring on side of caution.
some drawbacks to dropbox...
I am currently waiting about 26 hours for dropbox to enact the rollback I requested, not exactly real time recovery....
If you have a lot of files, I wouldn't recommend installing it on a PC with under 4GB ram, and that's even too little
If your outlook pst/ost is in 'my documents', every time you close it, dropbox will attempt to upload the changes, not good -if your pst is >1GB - you need to time restarts for outlook, or pause syncing
Dropbox will only backup files that are located under dropbox folder, anything on C drive, program files etc - no syncing unless you manually copy them into dropbox
still, I have one client using 8 computers/user profiles backed up to cloud for €100
cheapass cloud backup ftw
inb4 dropbox security = internet myth
(though they do have 2step auth now)
dropbox's support page, you have to email them for restore in event of large file rollbacks
bit of a pain in the ass, still waiting
aside, I'm pretty sure dropbox are as despicable as bigger huge corporations, I see no reason this wouldn't work same for microsofts one drive, googles drive or any other cloud backup service...
giving all my data to google and/or M$ just scares me more