Paul Simmonds, chief information security officer of ICI, has been made redundant following the acquisition of the chemicals firm by Akzo Nobel, which was completed in January 2008.
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Simmonds worked for ICI for seven years and in 2003 helped form the Jericho Forum, a group comprising a number of bluechip businesses. Its aim is to change the way the IT industry secures networks.
Rather than secure network perimeters with firewalls, Simmonds and the Jericho Forum suggested that the network needed to be open (or deperimeterised) to support businesses partnerships.
Speaking to Computer Weekly last week, Simmonds said the Jericho approach has made a considerable impact, both to the way the IT industry now treats security and the ideas of deperimeterisation adopted at ICI.
He said security products should not differentiate between securing the internal network and the internet. "Symantec Enterprise 11 espouses the Jericho principles."
"Everything we have done at ICI has been based on the idea of de-perimeterisation," he said. So when the company implemented PeopleSoft, Simmonds said it was implemented in a way that meant the internal network was considered as insecure as the public internet. When ICI decided to implement an online expenses system using a secure internet site managed by ICI American Express, the PeopleSoft system did not need to be reengineered to support Internet acccess. "We saved a lot of money by taking that decision," he said.
De-perimeterisation was also used during Akzo Nobel's acquisition of ICI. "When Akzo Nobel bought ICI it needed to see our networks and this involved building a trust relationship between the two companies' Windows Active Directories." Such a trust is model one of the principles of the Jericho Forum.