got an android phone? Google authenticator!!!! (think it may be on crapple and the other smart phones as well)
but if the attempt was stopped it means they tried to brute force it, if they had used a phishing scam or key logger they would of got in and you would of been none the wiser. the only reason to worry about your other accounts is if you use the same password on all them, and if you do you need to go sit in the corner.
but to prevent access do a full virus and spyware scan on your PC (and I mean full not just a quick scan) and never click links in an email that take you to places you need to log in. always be paranoid and you should be fine as brute force attacks are now near non-existent due to limits on login attempts so nearly all breaches are caused by either malware or entering you details in the wrong site so basically user fault. (most common for this is if you login to a service using a public PC)
but yeah if a firm can offer you any extra layer of security get it, things like the google authenticator are pretty bullet proof and as long as you have your main PC tied to your google account even if your phone was to fail you can get in and change it.