The Black Hat security conference wrapped up Thursday and the Def Con hacker conference is going on now and is scheduled to end Sunday.

Here's a roundup of some of the stories that have technophiles buzzing.

--Murder by hacking. Diabetic and security researcher Jay Radcliffe demonstrated how an attacker with a powerful antenna could be up to a half mile away from a victim yet launch a wireless hack to remotely control an insulin pump and potentially kill the victim. According to ZDNet, having the pump's serial number is one key to performing the hack, which is concerning since many products ship with product codes displayed on outside packaging. Read more at and .

--Your house can be hacked. Researchers Dave Kennedy and Rob Simon showed how they could disrupt and spy on home automation networks in residences and offices using devices connected to Ethernet networks that communicate via public power lines. Once plugged into a power outlet outside or near the target building, the X10 Black Out device they created can be programmed to jam the signals that turn lights on and off and open doors, as well as disable security systems, change climate controls, and interfere with other functions of a home automation network. They also showed off their X10 Sniffer device, which can see whether the doors are open and lights are on and can track people with motion sensors and see what part of the house they might be in. Read .

--Unmanned spy plane cracks Wi-Fi passwords, intercepts cell phone conversations. Security researchers Mike Tassey and Richard Perkins unveiled a remote controlled, unmanned aerial vehicle capable of cracking Wi-Fi passwords, exploiting weak wireless access points and mimicking a GSM tower to intercept cell phone conversations. They built the Wi-Fi Aerial Surveillance Platform to show how an ordinary remote controlled hobby airplane can be easily converted into something more sinister. Read .