Let's Encrypt is a certificate authority (CA) that allows you to create a free SSL certificate for your domain.
ReadyKernel is a product developed by Virtuozzo team, which should help to keep OS kernel up to date in terms of security fixes. This extension will help hosters get kernel on servers up to date with no downtime of their end-users' services.
Datagrid VCTR analyzes your server configuration and compares it to real world results from servers around the world to report reliability and security vulnerabilities. Datagrid VCTR pro allows you to automatically or manually select and fix vulnerabilities, and includes dashboard and email notifications. Compatible with Ubuntu, Debian, CentOS and RedHat distros. CloudLinux is not currently supported.
Patchman automatically and safely patches vulnerabilities in CMSs like WordPress, Joomla and Drupal. On top of that, it cleans up malware. With this plugin you you can install and manage Patchman from your Plesk panel.
The application integrates SpamExperts' advanced email security system with Plesk, offering automatic protection of domains and emails as well as a one-click login option to the dedicated SpamExperts control panel to manage specific settings and view detailed statistics.
This extension enables you to protect DNS data with Domain Name System Security Extensions. Due to BIND version requirements, the extension works only on the following OSes: Debian 8, Ubuntu 14.04, Ubuntu 16.04, CentOS 7, RHEL 7 and CloudLinux 7. DNSSEC is provided for FREE in "Web Pro" and "Web Host" license editions. It's PAID in "Web Admin" edition.
Nimbusec detects malware, defacements and blacklisting. With its extensive API and multi-user framework Nimbusec is fully integrated into your Plesk infrastructure and can even be offered as value added security service. Attractive re-selling programs for web hosters including white-labeling are available. Nimbusec's SPAM Shell, 0-Day root shell and CMS version detection capability protect your IP reputation, decrease unwanted traffic and reduce server load. As a hosting provider you can support your customers with pro-active help and use Nimbusec to remove malware infections fast. As a European product Nimbusec takes privacy seriously. Business data never leaves monitored servers and all functions are available without remote access rights. Find out more at https://nimbusec.com/en/reseller.html
Real time scanning of all HTTP and FTP uploads using ClamAV and reject automatically if a Virus file or bad extension is found. Option to enable automatic IP blocking and email alert and have an interface of manual ClamAV scanning
Configure LMD (Linux Malware Detect) to seek out and fight threats on your hosted environment right from your Plesk interface using the Admin-Ahead LMD Manager extension.
The Interface has all the option to manage your firewall: white listing IP, black listing IP, manage open TCP/UDP ports, view firewall logs, start/stop/restart APF and more.
Admin-Ahead DNSSEC Extension can be used to sign/re-sign/un-sign single and multiple DNS zones. Extension also automatically resigns zones when changes are detected
The one stop solution to bulk reset passwords of multiple accounts covering all Plesk account types. Reset customer, email, FTP, webuser, auxiliary, MySQL and additional administrator account passwords from a single interface.