WordPress is an extremely popular web platform, and because of its popularity it is often the target of hackers looking to “take over” pieces of your site for their own benefit. Hackers like to maximize the effect of their work, so they’ll often target widely installed plugins or themes with known security vulnerabilities. In most cases, your site was not targeted specifically, but was hacked because of some vulnerability in a plugin or theme installed on your site.
If your site is hacked, read the following resources to help you get up and running again. Even if your site has not been hacked, many of these articles cover security topics that are helpful for anyone in charge of a WordPress website.