Abstract
This study examined the security vulnerability of the Fortune500 corporations’ retail e-commerce network systems. The findings indicate that most e-commerce portals had their network information, such as network’s IP address, physical address, and network range, publicly available on the Internet through the Google search. However, these e-commerce portals had their most ports closed, filtered, or behind firewalls with very few open ports. The Fortune 500 commercial banks’ portals were most secure as none of their operating systems information was detectable. To further reduce the security vulnerability of the ecommerce network systems, this paper provided recommendations such as how to secure network information, how to hide portal’s IP address, and how to secure operating systems.
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