Log management is the process of continuously collecting, storing, and analyzing log data from across the organization’s tech stack. Organizations with excellent log management capabilities are more efficient and secure than those without.
Logs are computer-generated files that describe system or application activity. Most software tools can generate logs, providing IT teams with a valuable tool for conducting investigations into security events.
Most logs describe a single discrete event. For example, system administrators often review error messages, file requests, and transfers using log data. This data is timestamped, giving the administrator a clear idea of what the system is doing at any given moment.
Log management usually involves six types of activities:
Organizations that don’t have robust log management systems in place may find themselves at a severe disadvantage when responding to security threats and regulator audits.
Organizations without well-managed log data can lose a large amount of valuable information about active threats:
Many organizations generate logs but do not have an optimized log management system in place. Poor log management can create its own set of problems as well — like drawing hours of valuable analyst time away from high-impact strategic initiatives.
For example, imagine threat actors launch a brute force attack on a publicly-exposed application. Every failed login attempt generates a log that shows the attacker’s IP address, location, and other useful metadata. Incident response teams could use that data to block attackers from accessing the login page.
Good log management systems provide deep visibility into the organization’s security posture. They enable security teams to conduct investigations and find high-value information quickly.
Log management solutions work by connecting every tool, device, and application on the network to a centralized location. That requires undergoing a complex implementation phase that ensures the data is drawn smoothly and accurately from across the entire environment.
However, this data won’t be useful in its raw format. A huge variety of logging formats exist, and most tools and applications generate logs according according to their own needs. Before anyone can use these logs in a security context, they must be normalized.
Log management solutions include tools and processes for normalizing log data in various ways. The objective is getting all the organization’s logs in a single place and standardizing them so that they can be analyzed effectively.
The process of log management also includes deciding which logs to store and which ones to throw away. Redundant logs and null values take up valuable space without providing any security benefits, so there is no reason to pay for them to be stored and analyzed.
Log management and Security Information and Event Management (SIEM) are related but distinct concepts.
Many organizations adopt log management initiatives before pursuing SIEM implementation. Organizations may also invest in log management after implementing a SIEM platform, due to the high costs associated with unoptimized SIEM operations.
SIEM platforms can store log data, but keeping all of your data inside the SIEM can be prohibitively expensive. Organizations that invest in security log management solutions continuously fine tune their log collection and analysis workflows to reduce those costs.
The ability to manage log data effectively is an important first step towards operational security excellence. It enables the organization to pursue SIEM implementation and gain unlimited visibility over its security processes.
Here are some of the immediate benefits that come with best-in-class log management:
Most enterprise IT leaders make compromises between flexibility, visibility, and cost. Effective log management can be difficult to implement without a clear security strategy that prioritizes robust threat detection and response. These are the areas where most security teams run into problems keeping their logs organized
1. Organizations generate a huge number of logs, and the number keeps growing
Even a modestly sized organization generates an incredible volume of data every day. Continuously gathering, formatting, and analyzing that data takes up more time and resources that the security team can spare.
As the company grows, its security needs grow as well. When the number of logs generated reaches a critical limit, the security team might start deleting old logs to make space for new ones — potentially deleting valuable security information in the process.
2. Normalizing logs demands resources and expertise
Every tool, application, and asset in the network can generate logs, but each log will be formatted differently. Transforming these logs into a standard format takes time, effort, and expertise.
Log normalization should be an automatic process. Building out that process can be complex. Organizations that rely on product experts to create well-managed logging solutions will be better equipped to leverage log data successfully.
3. Logs can take up a great deal of high-cost storage space
Keeping all log data in the SIEM is the simplest log management solution there is. It’s also the most expensive. Part of the log management process includes identifying opportunities to reduce infrastructural and operational costs associated with log collection and storage.
Some organizations combine log management solutions with data flow and observability tools like Cribl to optimize storage costs. This allows the organization to keep logs in low-cost storage and replay them to the SIEM when conducting investigations on an as-needed basis.
4. Not all logs provide high-value security data
Redundant logs and null values cost money to generate and store, yet provide no security benefits. Some logs provide limited benefits that don’t represent enough value to justify the cost of collecting and keeping them.
Security leaders who decide to pursue log management solutions must also decide which logs are not worth capturing and storing. This requires a deep understanding of the organization’s security risk profile and its compliance requirements.
Lumifi provides customers with log management services that streamline security operations while granting deep visibility into security events as they occur. Find out how ShieldVision™ SLM combines the power of robust log management with our proprietary SOC automation service to make well-managed logs accessible for enterprises, small businesses, and everyone in between.
