 It comes as a surprise that, since the 2003 blackout, the security system had gone unchanged.The security system did not account for an increase of liberalization of electric supply which caused an increase in cross-border trades, which are not properly accounted for when reviewing the security of the system.Also, due to the decentralized form of government at the time, the transmission system operator, or TSO, would each control their own area, and exchange little information with other TSOs.