DNS Attacks

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Q: Jared is a security consultant. Many of his fellow employees are being redirected to a different website when they enter the public e-mail site access address into their browser. This alternate website requests that users validate their identity through entering their login information and password. In order to validate this change, Jared uses his iPhone to access the e-mail website. Instead of being directed to the new login/password page, his iPhone browser sends him directly to the original page. What attack has the company likely suffered?

a. DNS zone transfer attack

b. Directory traversal attack

c. DNS cache poisoning

d. Web cache poisoning attack of the email server

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