Where is the 'sign out completely' button for Yahoo mail?

Is this e-mail I received from yahoo actually from Yahoo?

• Can anyone tell me if this e-mail I received is actually from Yahoo - it looks legitimate but when I click to see who it's from it is from [email protected] See below for copy of e-mail. Thank you. Dear Customer, We appreciate that you have been with Yahoo! Mail for the past 6 years. We are looking forward to bringing you an even faster, safer, easier-to-use Yahoo! Mail very soon. If you've already upgraded to the latest Yahoo! Mail, thank you. If not, in about a month from the date of this email, when you sign in to your Yahoo! Mail account, we will ask you to upgrade to the newest version of Yahoo! Mail. But you don't have to wait. You can have the newest Yahoo! Mail today. You can upgrade now to the newest Yahoo! Mail if your browser is Internet Explorer 7, Firefox 3, Safari 4, or Chrome 5, or newer. Update Now If you do not have one of these browsers, update your yahoo account(it's fast and free) and then return to this email and click the Upgrade Now button. What You Can Look Forward To When You Upgrade Faster email The latest Yahoo! Mail spam-protection technology Easier-to-use design Unlimited email storage so that you can keep everything you want When you upgrade to the newest version of Yahoo! Mail, everything in your account (messages, folders, contacts, etc.) will be there. Learn more about the newest version of Yahoo! Mail. Your Alternatives If you're not ready to upgrade now, we recommend that you upgrade soon. You may access your current version of Yahoo! Mail, but we strongly encourage you to either upgrade to the newest version of Yahoo! Mail or review Yahoo! Mail Help for other options. Thank You for Being A Loyal Yahoo! Mail User We hope you enjoy the newest version of Yahoo! Mail. David McDowell Senior Director Product Management, Yahoo! Mail

• Answer:

  100% scam. That is a scammer trying to hi-jack your email address to spam all your contacts and then use the account to spam hundreds/thousands of others. Yahoo and all email companies, all banks and all companies in the entire world will NEVER ask for your password, pin or date of birth. No Exceptions Ever. Ignore and delete that email and any others demanding such information. If you have responded to a scammer, you are on his 'potential sucker' list, he will try again to separate you from your cash. He will send you more emails from his other free email addresses using another of his fake names with all kinds of stories of needing your password, great jobs, lottery winnings, millions in the bank and desperate, lonely, sexy singles. He will sell your email address to all his scamming buddies who will also send you dozens of fake emails all with the exact same goal, you sending them your cash via Western Union or moneygram. Do you know how to check the header of a received email? If not, you could google for information. Being able to read the header to determine the geographic location an email originated from will help you weed out the most obvious scams and scammers. Then delete and block that scammer. Don't bother to tell him that you know he is a scammer, it isn't worth your effort. He has one job in life, convincing victims to send him their hard-earned cash. Whenever suspicious or just plain curious, google everything, website addresses, names used, companies mentioned, phone numbers given, all email addresses, even sentences from the emails as you might be unpleasantly surprised at what you find already posted online. You can also post/ask here and every scam-warner-anti-fraud-busting site you can find before taking a chance and losing money, email address or identity to a scammer. If you google "yahoo email phishing scam", "email hijacked viagara porn spammer" or something similar you will find hundreds of posts of victims and near victims of this type of scam. In fact, if you check out the section here at Yahoo Answers entitled "Yahoo email, spam and bulk mail" you will find hundreds of questions from victims who have had their email address hi-jacked or spoofed by scammers sending out porn and viagra spam.