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The following books are highly recommended to progress your CEH v10 studies.
The data obtained by a Heartbleed attack may include unencrypted exchanges between TLS parties likely to be confidential, including any form post data in users' requests. Moreover, the confidential data exposed could include authentication secrets such as session cookies and passwords, which might allow attackers to impersonate a user of the service. An attack may also reveal private keys of compromised parties.
CEH v10 EC Council questions and answers.
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