It provided software and services for computers, servers, networks, and remote locations that involve preemptive security against threats before they affect a business.

In 1992, while attending the Georgia Institute of Technology, Christopher Klaus developed the first version of Internet Security Scanner.

About the same time, ISS acquired the company DbSecure, founded by Eric Gonzales and Aaron C. Newman, to add database security to their products.

[3] In 2004 Klaus stepped down as CTO, although he remained a significant shareholder and chief security advisor.

[4] On August 23, 2006, IBM announced its intention to acquire Internet Security Systems for $1.36 billion and its Japanese subsidiary, ISS KK, for additional $570M.