You mean for this account? If so, changing your password and email will help to prevent on future hacks. Strong password is useless if you logged on a device with keyogger malware or phishing site, just be aware of those sites.
Yes I mean this account and I am almost sure the case wasn't related to malware as none of my other accounts at any services got hacked. Anyway now I am using another machine, in fact the reason of my inactivity was a severe hardware problem and I bothered to log in here again only today. My bet is the database got at list partly compromised.
Why you still not change our old password yes,just do it as soon as possible ans stake your address here to recover your account in case if it is hacked again.