WordPress has such a massive ecosystem consist of a number of plugins and themes, threat actors involved in various malicious activities such as hiding the PHP backdoor scripts into the WordPress Security Plugin.
In this incident, the attackers sell existing unsupported plugins to new authors with backdoor code inserted and their goal is to insert SEO spam to the sites with the plugin installed.
Wordfence uncovers the incident and WordPress security team has closed the plugin from the store which means the plugin not available to download from the repository.
Read full news article on GBHackers