Mission Top Secret is an Australian TV series aired between 1992 and 1995.
This was part of the South Pacific Adventure series on a budget of $1 million.
When 12-year-old Jemma accidentally taps into a disused telecommunications satellite she finds that she has audio-visual contact with other computers worldwide.
Their primary enemy was one persistent individual, Neville Savage, who is some sort of criminal mastermind.
The inventor, Sir Joshua Cranberry, is the uncle of the Wiggins' twins, who are the primary protagonists in Season One.