Here are some widely used free security plugins for WordPress along with their brief features:
Wordfence Security: This plugin includes an endpoint firewall and malware scanner to secure your site. It performs security checks on traffic and has features like blocking malicious networks, scanning for malware, and monitoring live traffic.
Sucuri Security: Offers scanning, monitoring, and firewall protection. It also provides alerts on potential security issues, integrity monitoring, and malware cleanup.
iThemes Security (formerly Better WP Security): This plugin includes brute force protection, file change detection, 404 detection, two-factor authentication, and much more. It ensures site security by identifying vulnerabilities and protecting against attacks.
All In One WP Security & Firewall: Provides a user-friendly interface to secure your site. It includes a firewall, login security, user account security, database security, and backups. Also, it offers blacklisting and IP filtering.
Security Ninja: Performs more than 50 security tests, including brute-force attack checks, file permissions, and disabling the REST API for non-admins. It runs checks to verify security standards and suggests remedial actions.
Cerber Security, Antispam & Malware Scan: Protects against brute force attacks and spam. It has a malware scanner, integrity checker, and protection from bots.
These plugins offer an array of security features to safeguard your WordPress site. When choosing a security plugin, consider your site’s specific security needs and features compatibility with your WordPress version and other installed plugins.