With the internet, in all its glory, playing host to over 1.8 billion websites that can be accessed by virtually anyone in the world, it stands to reason that businesses may not want users accessing some of these websites due to security threats, inappropriateness, or other factors while on their network. How can businesses control what websites their users gain access to? Typically, most organizations have utilized a blacklist, which identifies websites that users are not allowed to access. This method is not very restrictive and can be problematic in that it allows access to everything, and I do mean EVERYTHING, that is not on the blacklist. A whitelist, as you might guess, is the exact opposite of a blacklist, and only grants access to websites explicitly identified on the list. If the site isn’t on the list, then the user isn’t granted access to it. The concept of a whitelist has been around for many years in website filtering but has seldom been implemented. It can also be problematic because, given the breadth and depth of the internet, only a fraction of the available websites would be allowed.