How 1-Click Script Installers Can Hurt Server Security What is a One-click Script Installer? A 1-click script installer is itself a script that installs other software on web servers. Most hosts offer these script installers because it helps people who are new website administrators get started faster and easier. For instance, if they want to run a WordPress site, they don't have to spend a half hour learning how to get their hosting account setup and ready to run WordPress. They just click a button and it's installed instantly and automatically.