Centralize Security Event Alerting

Organization should use tools that support both manual and automated searches, including criteria-based searches. The tool should be able to automatically collate data from different sources to more easily determine whether an incident is genuine, as well as its scope and nature.

These operations and processes can be implemented with SIEM (Security information and event management). SIEM solutions use analytics tools, technology and algorithms (e.g., newer SIEM solutions employ applied machine learning) to help detect unknown threats and abnormalities in the security-relevant data. Also SIEM solutions allow organizations to modify already existing (which usually come pre-configured) and add criteria-based alerts to match known threats. These things will help detect threats earlier.

Security systems (e.g. firewall, malware protection) often have the ability to record a log of events. At regular intervals, make sure that a comprehensive log is accumulated and try to identify suspicious activity. The log is also useful in investigating disturbances or violations.

Often, security tools provide a way to set alert policies when something potentially dangerous happens in an organization's environment. For example, Microsoft 365 has built-in alert policies to alert you to abuse of administrator privileges, malware, potential internal and external risks, and data security risks.

The organization must identify security-related events in data systems and the environments in which they operate. To respond to changes related to these events, alarm policies must be created.

Alarm policies need to be actively monitored and modified based on experience.

System logs often contain a wealth of information, much of which is irrelevant to security monitoring. In order to identify events relevant to security monitoring, consideration should be given to automatically copying appropriate message types to another log or to using appropriate utilities or audit tools to review and resolve files.