[glorgau]

If you need to save critical documents, either print them and file them in triplicate or have at least 3 soft copies of them (i.e. CD/DVD, thumb drive, and computer hard drive).

Don't forget to encrypt the files with a sufficiently secure password...

[rarestia]

Depends on the data. Pictures, music, and video I don’t see as particularly vulnerable to exploitation. Anything of value like legal paperwork, real estate documents, bank statements, licenses, etc. you should absolutely encrypt.