Technical Trading Solutions Ltd
IT infrastructures permeate user's daily lives, and their society becomes more dependent on information technologies [Cas05]. Cost reduction, improved business opportunities or quality of services; everyday more systems get connected to the Internet. As the scale of such interconnected IT infrastructures grows, due to short innovation cycles, information and communication technologies become more complex and agile. Therefore, securing IT infrastructures becomes a growing challenge. Monolithic approaches such as using standalone virus scanners, firewalls and Intrusion Detection System (IDS) devices for protecting the perimeter cannot cope with complex malwares and multistep attacks.