Modern businesses operate under constant cyberattack. Cybercriminals of every type continually launch ransomware, viruses, phishing, and denial-of-service attacks that threaten your computer systems and network infrastructure. That puts your IT and security teams always on defence, without the time and expertise to proactively detect and respond to advanced threats. And when you are on defence, just a single mistake can lead to devastating results. Organizations of all sizes are at risk. They need to protect intellectual property, personal identifiable information, and other sensitive data from being compromised or stolen.
To ensure data and sensitive information always remain safe, companies should develop security strategies that use a Security Information and Event Management system (SIEM). A SIEM is a core technology of a Security Operations Center (SOC) commonly understood as a team of security experts using a diverse range of advanced tools to thoroughly monitor a company’s systems and network infrastructure for attack threats, including those of malicious insiders.
Why do you need a SIEM?
Security Information and Event Management (SIEM) software is a foundational component used in SOC. It is a collection of tools that provide a combination of Security Information Management (SIM), also known as log management, and Security Event Management (SEM), also known as the correlation engine. By integrating these two capabilities, SIEM offers actionable intelligence derived from a high volume of diverse log data collected from various endpoints (laptops, desktops, servers), security devices (firewalls, intrusion detection/prevention services), applications, databases, and network elements (switches, routers).
A SIEM can be a powerful tool to detect cyberattacks and insider threats if it is well architected, fully implemented, and finely tuned. But a SIEM’s success depends on much more than selecting the correct piece of software. It also relies on the skillset of those who continuously manage it, as well as the best practices used to do so.
Stages of SIEM Implementation
Every stage of SIEM implementation imposes its own layer of complexity.
1. Deployment: A SIEM is known for its long deployment cycles, and functions effectively when it is connected to sufficient information sources. While an initial deployment may sound simple – i.e., just connect the SIEM to raw log sources and run searches over the resulting log corpus – it rapidly grows more challenging. Once your team deploys agents and activates normalization engines that convert raw logs into structured data, unanticipated mis-categorizations are common. During this entire extended deployment period, your company is not fully protected by its new SIEM.
2. Administration: A SIEM requires constant tuning. This goes for rules, algorithms, and agents. Rules must be regularly updated, and vendors frequently issue patches and updates for device and endpoint software. Each time this happens the agent needs to match the supported version or risk getting thousands of false positives.
3. Operations: A SIEM generates a large volume of alerts and notifications. It requires 24×7 monitoring and response to efficiently and promptly process all notifications.
Security Information and Event Management can be such a useful tool for safeguarding businesses of all sizes and IT systems due to several key benefits:
- SIEM tools can dramatically reduce the impact of a security breach on your business breaches by providing a fast response to any security events detected.
- SIEM help enterprises manage the increasing volumes of logs coming from disparate online sources. Storing the logs from different sources in a central secured database make the process of consolidation and analysis easy.
- SIEM ensures real-time visibility by proactive monitoring of networks for suspicious activity in real-time.
- SIEM keeps your business productive by defending your IT infrastructure against malicious attacks.
- SIEM provides increased efficiency due to better reporting, log collection, analysis and retention.
By describing all the above mentioned SIEM features and advantages, we can conclude that SIEM is considered not only as an issue of security or technology, but as an issue of business processes and productivity! SIEM introduction should be precisely planned in order to avoid false expectations or unexpected costs later on. Our team of experienced experts is able to give you the best advice in the field of SIEM and to can support you in developing a SIEM concept in conformity with your business requirements.