"This is why writing down many different passwords is
acceptable. You can secure paper: this is easy. If someone close
enough to you wants to compromise you, it's not that difficult. The
majority of the time it's the remote attackers that want to, and
these anonymous attackers also do the most damage. Have different
passwords for work, home, bank accounts, social networking sites,
e-mail accounts, and anything else that's distinct and easily
classifiable. Make them all very strong, and write them down.
Identity theft or corporate intrusions often start with the weakest
link, so you need to be sure that one compromised account cannot be
used to divine access to others types of accounts."