Bullshit, the control of power transmission is not connected in internet or other LAN with PCs accessing it, the control of the power transmission here in Brazil uses security patterns like voice analysis, etc...
They mention how the public facing website was invaded, which is interesting and a rather impressive display of utter incompetence. There is little information on what really went wrong with the control systems, if they are top blame for the blackout.
The timing of the blackout was particularly unlucky, days after the CBS attributing two previous blackouts to computer invasions. And I wouldn't count invasions out right now.
