In cybersecurity, 'frame extension' refers to the deliberate modification or manipulation of a data frame’s length within network communications. This technique can be used to bypass security controls, evade detection, or exploit vulnerabilities in protocols that do not adequately validate frame sizes. Attackers may use frame extension to inject malicious payloads, cause buffer overflows, or disrupt normal network operations. Proper validation and strict adherence to protocol specifications are essential to prevent such attacks. Security systems should monitor for abnormal frame lengths and enforce limits to mitigate the risk associated with frame extension techniques.