Wireless packet injection is a technique used in cybersecurity to send custom data packets over Wi-Fi networks. This process allows security professionals or attackers to transmit specially crafted packets to a wireless network, often bypassing standard communication protocols. The primary purpose is to test network security, identify vulnerabilities, or exploit weaknesses in wireless infrastructure. Packet injection is commonly used in penetration testing to simulate attacks, such as deauthentication or replay attacks, and to evaluate the resilience of wireless networks against unauthorized access. However, malicious actors can also use this method to disrupt network operations or gain unauthorized access, making it a critical focus in wireless network defense strategies.