About Internet Security Systems

Internet Security Systems, Inc. (ISS) was founded in 1994 by Christopher W. Klaus and made its initial public offering on the NASDAQ on March 23, 1998.


The company provides security products and services that preemptively protect enterprise organizations against Internet threats.

ISS celebrated its 10th anniversary in 2004 and has commanded the leading edge of security innovation, inventing cornerstone technologies such as vulnerability assessment and intrusion detection/prevention.

The company continues to set standards in the security space with ISS protection platform, offering enterprise-wide preemptive protection that is tightly integrated with existing IT business processes.


ISS is headquartered in Atlanta and maintains more than 35 offices in 20 countries worldwide.

Learn about the ISS protection platform

Learn about preemptive security