The defendant says there is a conspiracy to fabricate evidence against him. Matthew first hacked the girl's file and then did a fake mail. In mail he claimed to be a constituent suggesting there was an insecure internet system at the school.
"Mr Higgins denies securing unauthorised access to computer data at Eirias High School in March last year and attempting to do so again two months later." BBC said.
The prosecution accused Mr Higgins of having "played a game of bluff and smoke screens" and trying to portray himself as a victim. The trial is continuing.