The Report recognizes the following companies as the key players in Global Managed Security Services Market: AT&T Inc., Dell Inc., IBM Corp., Symantec Corp, Verizon Communications Inc., Bell Canada Inc., BT Global Services Ltd, CentraComm Communications Ltd, Check Point Software Technologies Ltd., CGI Group Inc., Computer Sciences Corporation, FishNet Consulting Inc., Fujitsu Ltd., Getronics USA Inc., Hewlett-Packard Co., Integralis AG, Lockheed Martin Corp., Solutionary Inc., Tata Communications Ltd., Trustwave Holdings Inc., VeriSign Inc., Wipro Technology Services Ltd.