Wednesday, July 7, 2021

Don’t let subdomains sink your security

If your enterprise has a website (and one certainly would hope so in 2021!), it also has subdomains. These prefixes of your organization’s main domain name are essential for putting structural order to the content and services on your website, thus preventing online visitors from instantly fleeing in terror, disdain, or confusion.

Large enterprises can have thousands of subdomains. IBM, for example, has roughly 60,000 subdomains, while has “only” 2,132 subdomains.

Whatever value subdomains bring to enterprises--and they bring plenty--they present more targets for bad actors. Why, just last year the subdomains of Chevron, 3M, Warner Brothers, Honeywell, and many other large organizations were hijacked by hackers who redirected visitors to sites featuring porn, malware, online gambling, and other activities of questionable propriety.

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