51% of security officers secure their networks at the edge only

51% of chief security officers surveyed by Vernier Networks and Qualys regulate their network access by admitting users at the network edge. 36% rely on a VIP Entrance approach to network access, which identifies users and "accompanies" them around the network to ensure they do not access unauthorized areas. 13% admit to a "revolving door" approach, with users coming on and off the network as they please. 62% of CSOs acknowledged that their organizations faced intrusions from internal sources.