#4 National Institute of Standards and Technology (NIST):

National Institute of Standards and Technology, formerly known as National Bureau of Standards (NBS), is a measurement standards laboratory, which is a non-regulatory agency of the United States Department of Commerce. The lab is also called National Metrological Institute (NMI).

In terms of IT security, the NIST plays a major role in meeting defensive measures and security requirements across all over the globe. According to the research firm, the recent focus has been on cloud computing and mobile security.

#5 Cisco’s Design Zone for Security:

Cisco is a company that needs no introduction in the world of networking and security. The company is the primary leader in successfully offering security and networking devices and guidance across the enterprise platform, throughout the globe. The company designs, manufactures and sells its own networking devices.

Similarly to VMware, Cisco also provides deep insights on security within their website. Cisco's Design Zone for Security provides in-depth information related to application performance, branch/WAN, campus, data centers and much more.

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