If I may add one thing to what Rich said, never, ever, click a link in an email to log into your account on any site. Any site. Rarely does a legitimate email include a link to log on to an account. A few do, though. Generally, if you understand what a url looks like and what redirection means, if you hover your cursor over the link in an email you'll see whether it is going to a legitimate site. In any case, it is far safer to use your browser to log into the site to see if you really do need to update your information.
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