To determine whether a site is accessible, we use a checklist called the Web Content  Accessibility Guidelines 2.1, or WCAG, created by the World Wide Web Consortium (W3C). They have three levels: A, AA, and AAA. As of this writing, to be considered accessible, a website has to meet WCAG 2.1 AA.

Any website that does not meet the criteria for a compliant website could be a target for a lawsuit. In fact, in most cases, unless “Section 508 compliance” was listed as a project requirement, most websites out there are not compliant, and therefore a potential target.