Online privacy? 66 Ways:
Online safety? Check out this from the FBI: https://sos.fbi.gov/
A passphrase should:
- Long enough to be hard to guess
- Not a famous quotation from literature, holy books, et cetera
- Hard to guess by intuition—even by someone who knows the user well
- Easy to remember and type accurately
- For better security, any easily memorable encoding at the user's own level can be applied.
- Not reused between sites, applications and other different sources.