Unknown Yahoo Usernames Appear

[bothedog]

I am seeing a bunch of different usernames showing up as logged in on
my yahoo mail to: page. No one has access to this computer physically
except me, and the accounts don't seem to have any pattern, I have
written them down each time one comes up. Yahoo allows me to log them
out, but if I try to access the account info of the user it alsks me
to login, which I can't do cause I have no idea about the password.
Some of the names seem to resolve to real people, though I'm sure they
are not aware of someone using their login.

Has anyone heard of a virus that causes this type of activity. If it
would help I can provide the user names that have been coming up on my
yahoo page. Thanks in advance.

 

[Buddy B buddyb]

I am seeing a bunch of different usernames showing up as logged in on
my yahoo mail to: page. No one has access to this computer physically
except me, and the accounts don't seem to have any pattern, I have
written them down each time one comes up. Yahoo allows me to log them
out, but if I try to access the account info of the user it alsks me
to login, which I can't do cause I have no idea about the password.
Some of the names seem to resolve to real people, though I'm sure they
are not aware of someone using their login.

Has anyone heard of a virus that causes this type of activity. If it
would help I can provide the user names that have been coming up on my
yahoo page. Thanks in advance.

i don`t use yahoo but i saw or heard recently that their instant
messaging util was upgraded due to a fault that could be exploited.
(Heard that one before).
Maybe Yahoo has something about your problem?