IBM Internet Security Systems is a Web watchdog. The company (also known as IBM ISS) provides network security monitoring, detection, and response software and services used to protect computer networks, servers, and desktop PCs. Its products respond to intrusions, assess vulnerabilities, collect and analyze data, and provide centralized security management. IBM ISS also offers a growing portfolio of managed security services, including security assessment, intrusion detection, firewalls, virtual private networks (VPNs), and virus filtering. It serves such industries as telecom, IT, and financial services. IBM ISS is a unit of global IT products and services leader International Business Machines.