guard: Source Guard Dog The security sector in Papua New Guinea is large, according to NOW Magazine. It has combined annual revenues in excess of 1 billion kina and it is the nation's third largest employer. John Bellinger, CEO of PNG's largest security firm, Guard Dog Group, provides five tips that can help any business manage its exposure to security risk in PNG. Guard Dog's Armoured Division. There are over 400 registered security companies in PNG, employing some 30,000 people. It is not hard to see why. It is estimated that four out of five businesses in PNG employ security staff, either directly or indirectly. (www.immigrantscanada.com). As reported in the news.