A former senior database administrator for GEXA Energy in Houston was sentenced today to 12 months in prison for hacking into his former employer's computer network.Steven Jinwoo Kim, 40, of Houston pleaded guilty on Nov. 16, 2009, to one count of intentionally accessing a protected computer without authorization and recklessly causing damage. Kim was also ordered to pay $100,000 in restitution to GEXA Energy and to serve three years of supervised release following his prison term.