Description: A replay attack is a type of attack in computer networks and security where an attacker intercepts and retransmits valid data from a previously established communication. This attack relies on the idea that by repeating a data transmission, the attacker can deceive the receiving system into believing it is receiving legitimate information. Replay attacks are particularly dangerous in environments where data authentication and integrity are critical, such as in financial transactions or communication between devices. This type of attack can lead to identity theft, data manipulation, and unauthorized access to systems. To mitigate these risks, security techniques such as the use of timestamps, sequence numbers, and robust authentication mechanisms are implemented to ensure that each transmission is unique and cannot be maliciously reused. Understanding replay attacks is essential for security professionals as it allows them to design more secure systems that are resilient to such vulnerabilities.
