So, what happens if you always delete/clear your cache?
And/or use a different browser, like say....Firefox?
If you use Firefox they don’t need to crack it, your passwords can be seen in clear text (Tools- options, security, stored passwords, show passwords). More fun still your passwords and other stored text (like say your CC numbers) are stored somewhere in your profile stuff, so anybody on the machine just has to copy the Mozilla folder from your Application Data and they’ve got all your magic conveniences.
I like FF a lot, but they actually have a pretty massive security hole.