Neville is a network security analyst working for Fenderson Biomedics, a medical research company based out of London. Neville has been tasked by his supervisor to ensure that the company is as secure as possible. Neville first examines and hardens the OS for all company clients and servers. Neville wants to check the performance and configuration of every firewall and network device to ensure they comply with company security policies. Neville has chosen to use Firewall Informer because it actively and safely tests devices with real-world exploits to determine their security state. What built-in technology used by FirewallInformer actively performs these exploit tests on network equipment?