From when I first read about drones, they definitely seemed a two edged sword.
The Security New Desk describes a hi tech system - AUDS (Anti-UAV Defense System) - manufactured by Blighter Surveillance Systems, Chess Dynamics and Enterprise Control Systems:
The Anti-UAV Defence System (AUDS) integrates the Blighter A400 Series Ku band electronic scanning air security radar, Chess Dynamics stabilised electro-optic director, infrared and daylight cameras and target tracking software, and a directional radio frequency (RF) inhibitor/jammer system from Enterprise Control Systems to detect, track, classify, disrupt and neutralise UAVs at ranges of up to 8km. The AUDS system is even effective against so-called Group 1 micro UAVs at ranges of up to 2km and Group 1 mini UAVs at ranges of several kms.
Another hi tech system is made by LiteEye which offers a variety of choices to defend against drone intrusions. They make a highly mobile system.
Police have a more portable system.
Smaller home systems are also being developed.
The anti-drone defense technology is growing.