The data was Saturday anonymously, by someone using the name "Bgr R." In the post, he (or she) wrote, "Here comes my revenge for illegitimate firing from Florida Power & Light Company... ain't nothing you can do with it, since your electricity is turned off !!!"

In an e-mail interview, Bgr R said he's a former employee who discovered a vulnerability in the company's Cisco security management software that he then used to hack into the SCADA (supervisory control and data acquisition) systems used to control the turbines. His motive was to embarrass the company, he said. "I want people to know about them and how they really work on SCADA security," he said.

It's not clear whether or not the posting is a hoax, or if any systems have been affected, but the screen shots of the Wind Turbine management interface looked legitimate, said Wesley McGrew, an industrial systems security researcher with McGrew Security. "My best guess is that it's legit, and this guy will probably be picked up pretty quick if it's really a disgruntled employee," he said in an instant message interview. "The whole thing looks like just a grab bag of stuff he had access to."

"If it's all a hoax, it's really well done," he said.

On the other hand, there are some big question marks, McGrew said. In his interview with IDG News, Bigr R didn't say much about how he broke into the SCADA systems themselves and he didn't demonstrate much insider knowledge of Florida Power & Light (FPL) systems. At one point he mistyped the FPL acronym.