Answers
Watching someone enter a PIN
Phone calls from fake companies
Links to fake websites
Passwords
Standing directly behind someone
Out-of-date anti-malware
Other personal information
Updates never installed
Credit card details
Old virus definitions
Forged sender email address
Usernames
Observing a screen in public
Unpatched software
Using a CCTV camera
Emails from a fake bank
Texts asking for personal details