[Ham-Computers] Email security question

[Brian K. Gaskamp]

I hope someone can give me some good info on the above subject.

For example, if someone has Web based email, such as Yahoo mail, Hotmail, 
etc. and they suspect someone has figured their password out, and logged in 
from another computer somewhere other than their home computer,

Can Yahoo or whomever  trace something to that nature, or would  the 
computer's harddrive keep a record of when that email was last logged 
onto...Time, date, etc

I hope this is worded correctly and I didn't confuse anyone.

Thanks for any input you might can add, or suggestions.

73/Brian