Hi Nori-chan,
Is there any reason for you to believe that your devices are at fault? It may have been possible that your password was brute forced or found in a database somewhere. Did you ever log in on public wifi?
Donovan
I'm kinda paranoid about security, and I didn't had any problems for about 3 years, but few days ago, it started again.
My password brute forced is possible, but to brute-force something with more than 30 characters is a lot.
Maybe in a database? Possible, but not sure why it would happen.
EDIT: I said I wouldn't e sure why it would happen because when Yahoo got some problems about security this year, I've changed my passwords (all of them), but if someone later got access to my account, then how he\she got it?
I never log in in public wi-fi.
You could install Intent Analyser app and Fake Hotspot Detector
or connect your device to a computer,
get the device drivers there and scan when it is recognized and shows up.
polonus
I could try that too, but for now, I will just observe for any suspicious activity.
And about that, I noticed that I was logged out from my account today, even if it's checked to remember my login. Does this website automatically ask me to login again after some time (like Yahoo! mail)?
EDIT: Strange, it happenned today again, I had to log in, at least the password is the same.