Which option best describes the following situation: An attacker has intercepted network packets between a browser and web server. The attack then re-transmits the intercepted data to the web server hoping the server will respond with useful information (e.g. a session id, credit card information, etc.).
The attack described is called a Replay or Playback attack. The attacker is able to eavesdrop on network data (through some other method) and is resending the collected network data to gain access to confidential data or to hijack a users session. Aside from ensuring network data is not intercepted, the easiest way to defend against a replay attack is to use encrypted connections (e.g. HTTPS for a website).
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What is a Replay Attack?
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How does HTTPS help prevent Replay Attacks?
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What are other methods to protect against Replay Attacks?