Penetration testing of Bluetooth, BLE (Bluetooth Low Energy), and WiFi is essential for securing wireless communication channels that are often overlooked but frequently exploited in real-world attacks. These technologies are widely used in consumer electronics, medical devices, industrial IoT, and automotive systems, making them prime targets for data interception, device spoofing, and unauthorized access. Tools like BlueHydra, BtleJack, GATTacker, Aircrack-ng, Wireshark, and Kismet enable testing through techniques such as passive sniffing, signal injection, fuzzing, and man-in-the-middle attacks. Testing follows guidelines from OWASP Mobile Security Testing Guide, Bluetooth SIG security specifications, NIST SP 800-121 (Guide to Bluetooth Security), and IEEE 802.11 standards for WiFi. By regularly conducting such tests, organizations can identify misconfigurations, weak encryption, and protocol-level flaws to prevent wireless-based intrusions and ensure secure device connectivity.