Physical security can provide a number of guidelines when establishing an information security model, says Johann van der Merwe, global head of information security at De Beers “You can get a lot of tips from physical security when you want to get a company’s information security off the ground,” says Van der Merwe. He says it is important to remember that diamonds are at the centre of De Beers’ pipeline and that everything – including information security – essentially revolves around that.