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Google wipes all your data (easy and cheap "sanatizing"!) before returning your account, in some cases when an account gets compromised:
- http://www.insidehighered.com/blogs/law_policy_and_it/who_s_watching_the_store
- This was written by a Cornell staff member.
- ChemIT know of a campus IT peer whose account was similarly compromised and subsequently "sanatized".
Your DropBox.com account gets hacked and all data removed:
- http://www.businessinsider.com/professor-suffers-dropbox-nightmare-2013-9* College Professor states, "I Lost Tons Of Critical Files Because Of Dropbox"
Or, you do something you didn't intend to do, resulting in loss of data.
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Here are some promising, but untested-by-ChemIT, tools and services: