Launched by security engineers because of the lack of available open source products alienvault ossim was created specifically to address the reality many security professionals face.
Open source siem.
An organization may save money on licensing costs but spend money on continual maintenance.
As an organization grows open source siem software can become labor intensive.
Open source siem tools are available for the public to modify and the best tools enjoy a community of loyal supporters.
Many open source siem solutions lack key siem capabilities such as reporting event correlation and remote management of log collectors.
The open source version of alienvault s unified security management usm offering ossim is probably one of the more popular open source siem platforms.
A siem whether it is open source or commercial is virtually useless without the basic security controls necessary for security visibility.
That said the tool has potential drawbacks.
This allows it professionals to modify and share the tools code much more freely offering important customizability and adaptability.
Ossim includes key siem components namely event collection processing and normalization and most importantly event correlation.
Open source siem and free siem tools can seem like the solution.
With ossim users get a powerful siem open source tool with the logging and monitoring elements of sem and the threat assessment automated responses and data synthesis of sim.