Hi,
We would like to announce a new plugin to increase the security and privacy of Moodle: GuardianKey.
GuardianKey aims to protect systems in real-time against authentication attacks. Through an advanced Machine Learning approach, it can detect and block malicious accesses to the Moodle, notify the legitimate user and the Moodle administrator about such access attempts.
You can do download from Github:
https://github.com/pauloangelo/guardiankey-plugin-moodle
We have submitted the plugin in the official moodle directory a few days ago, but it has not yet been reviewed and released:
https://tracker.moodle.org/browse/CONTRIB-7543
More information about GuardianKey in https://guardiankey.io