ATLANTA and SUMNE, France – SecureWorks' network intrusion prevention appliance, iSensor V5.3 has received the NSS Approved award. The NSS Group is a leading independent security testing organization. The iSensor is the hardware appliance which enables SecureWorks' managed network intrusion prevention service. It is used to monitor Internet network traffic and prevent intrusions by filtering network packets. "The iSensor 850 performed consistently and completely reliably throughout our tests," said Bob Walder, director of The NSS Group security testing labs. "Under eight hours of extended attack (comprising millions of exploits mixed with genuine traffic) it continued to block 100% of attack traffic, while passing 99.999% of legitimate traffic (an average of two legitimate sessions out of a total 300,000 were blocked)… Resistance to all evasion techniques was excellent and throughput and latency were excellent under all but the most extreme network loads." NSS also found that the iSensor offered good distributed denial of service mitigation with minimal impact on throughput and latency. DDOS is an attack designed to consume all network and computing resources preventing an organization from serving its customers.