General recommendations
Although most modules are not malicious, many developers do not consider the impact that certain features of a module may have on a site or server. Poorly designed modules can negatively affect sites on several levels: Security, Performance, Stability.
Therefore, the reputation of a module is very important. Before downloading and installing a module, look for reviews online.
Does it have consistent negative reviews (or no comments)? If so, you should be careful.
If you are suspicious of a particular module, there is often another module with the same functionality that has a better reputation, or better performance.
We recommend that you install modules from the PrestaShop module interface only: https://addons.prestashop.com/en/2-modules-prestashop
