At the DefCon hacker conference, researchers Dave Kennedy and Rob Simon recently demonstrated two tools designed to hack automation and security systems that operate over power lines.

"The systems operate on Ethernet networks that communicate over the existing power lines in a house or office building, sending signals back and forth to control devices," writes Wired's Kim Zetter. "The problem is that all of these signals are sent unencrypted, and the systems don’t require devices connected to them to be authenticated."

"'None of the manufacturers have implemented really any security whatsoever on these devices,' said Dave Kennedy, one of the researchers," Zetter writes.

Go to "Hacking Home Automation Systems Through Your Power Lines" to read the details.

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