CNET NEWS -- Dec 20 -- Yahoo plans to tighten security on its dating site after a security expert uncovered a method for breaking into members' accounts. Yahoo Personals ads contain clues about key personal information, birth date and ZIP code, that members also use to reset their passwords. If an intruder obtains that data, the only thing that would block him from changing passwords and accessing accounts are members' secret questions, such as "What's your pet's name?" In the age of instant messaging and e-mail, answers to such questions are often easy to obtain with a bit of social engineering.
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