RS Firewall
This extension allows you to scan incoming traffic, instantly blocking any kind of anomalous activity. You can set it to block traffic from specific countries or IP addresses.
It is, therefore, one of the best solutions on the market to protect your website from any vulnerabilities by starting antivirus scans, adding a second password to access the back end, using Spamhaus lists to control IPs.
JomDefender

JomDefender checks your site's files and folders for possible infections. When infections are detected, the plugin performs a thorough cleanup that eliminates any viruses or malware.
In addition, JomDefender also supports you in other areas, namely: password protection, two-factor authentication, IP blocking, protection from forced attacks and malware scanning. In addition, it notifies you of any abnormal behavior via email.