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Security Information & Event management

What is SIEM software? How it works and how to choose the right tool

Evolving beyond its log-management roots, today's security information and event management (SIEM) software vendors are introducing machine learning, advanced statistical analysis and other analytic methods to their products.

Overview

 In the field of computer security, Security information and event management software are very well known and helpful. The main objective of this software is to help companies to quickly respond to external attacks and organize mountains of log data.The term Security Information and Event Management (SIEM) is merged from two different tools. They are SIM (security information management) and SEM (security event management). It is a kind of automated reactional software. The main goal of this is to analyze log and event data in real-time. SIM collects, analyzes and reports on log data by threat monitoring, event correlation, and incident response.


Case study

In every organization's technology infrastructure has multiple devices such as firewalls, VPN, user events, Operating systems that can easily generate thousands and thousands of events per day or even more. Now it's about impossible for a security engineer to deal with those millions of events. No matter how good a security engineer is or how big is the security team, they will need a good SIEM tool. Like that no matter how good an individual device is. If it's not monitored and correlated well, each device can be bypassed individually and the security of the total system can be a breach. There have been many instances of threats for not using SIEM tools in many reputed companies.

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Problem statement

Without built-in event detection capabilities, the hosts can audit log entries. Malicious activities can not be identified as well by analyzing the log entries. For this reason, the nature of the attacks remains unknown. Without streamlining compliance reporting, it is nearly impossible for the host to do a proper inspection of the security events. The log data can not be regularly transferred. All kinds of incident handling get a breach and its efficiency decreases. 
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Solutions

SIEM software collects log data generated from the organization's technology systems like host systems, applications to network or security devices (firewalls and antivirus filters). Then analyzes those events and delivers on two main objectives. The first one is to provide security-related events and incident reports, such as successful and failed logins, possible malicious activities. The second one is to send alerts if analysis shows that an activity runs against predetermined rule sets and thus indicates a potential security issue.


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SIEM benefits

SIEM benefits vary across organizations because different organizations use the SIEM system for different purposes. Here we will be known three common and important benefits.


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