Bulletpoints:
-Make sure none of your account passwords are the same.
-Sentences are much stronger than phrases for passwords
-Use special characters for passwords.
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"God may not play dice with the universe, but something strange is going on with prime numbers."
-Paul Erdos
"There are two types of cryptography in this world: cryptography that will stop your kid sister from looking at your files, and cryptography that will stop major governments from reading your files."
-Bruce Schneider