CRM Defender is a complete and robust module that introduces a safe barrier against brute-force and dictionary attacks. It produces a permanent ban of IP addresses from where a predefined number of failed attempts comes.
Other add-ons of interest
Analytic Reporting Tool Basic
Dynamic Reports and Interactive Charts.
Powerful tool for SuiteCRM report creation and data analytics. Includes a variety of chart types, detailed, summary and pivot tables. This Reporting Tool is for anyone, no need for technical knowledge or SQL. Comes with over a hundred prebuilt reports.
SecuritySuite - Enhanced SuiteCRM Teams
Control what your users can access and save time, money, and frustrations. Lock down sensitive data in SuiteCRM to specific groups or teams. Supports unlimited assigned users, unlimited group assignments to records, custom layouts for each group, login/sudo capabilities and much more.