They say it’s the login page to your account? Make them prove it
At some point, there’s a chance you may receive an e-mail that looks like it came from Yahoo!, taking you to something that looks like a Yahoo! Search Marketing login page, but something’s…not quite right. It could be a “phishing” attack from someone who is trying to duplicate a Yahoo! page in order to get your user name and password to hijack your account.
To help combat these phishing scams, we have installed what’s called a “sign-in seal” on our log-in page. Already in use by many financial institutions, a sign-in seal is a cookie-based secret message or image that is displayed on your computer(s) only. (That is, the machine(s) you use to log in to your account.) If you use more than one computer, you’ll need to set up your seal for each. You can create your own custom text message to use as a seal, or upload your own image.
If you do not see your custom seal—and you haven’t cleared your cookies on your browser—when signing into your account, the site you’re on may be a “spoof” site designed to hoodwink you into giving up your valuable personal information. We encourage you to create a customized sign-in seal for your Yahoo! Search Marketing account today, then look for it every time you log in. You can set up your seal from your Yahoo! Search marketing log-in page (the real one).
—The Team at Yahoo Search Marketing





