Which site?
the site:
mail.yahoo.com - which when you need to sign in, it redirects you to a page at
login.yahoo.comI think it is a false positive and not a phishing site.
How can it be a phishing site? It is actually a yahoo server. And I have a SiteKey setup on my yahoo account (a picture I uploaded) that the page does display when I go there and the cookie for it is present in my browser.
Unless yahoo's servers themselves are compromised.
What other explanations are there?