I have been using computer for a long time, but this is the first time when I encounter a problem like this. All of a sudden, my homepage was changed (I have a computer security software, also I change my passwords monthly). However, something strange has happened without my knowledge. My homepage has been changed without my permission and now I cannot set any other page as homepage. This is really strange, it seems that it is Search.fo-cmf.com virus or something. Is this page malicious? I am worried…