Consider the benefits of UEBA technology with MDR experts at the helm

Article by Gareth Cox of Exabeam.

Best-in-class security technology complements a great experience and vice versa. Both are needed to significantly improve security posture.

User and entity behavior analysis (UEBA) technology is a game-changing development for the cybersecurity industry. These tools allow security policies to evolve beyond the application of static sets of rules and detect a much broader range of suspicious activity across the enterprise.

Correlation rules have been synonymous with Security Information and Event Management (SIEM) since the first SIEM 1.0 solutions hit the market in the mid-2000s. Over time, new features like improved log management and better alert categorization made these tools more valuable to enterprise IT leaders, but static rule sets remained the norm.

Cracks in SIEM 1.0 technology have begun to show. Even the most sophisticated set of security rules regularly fails to detect insider threats and compromised accounts. It’s easy to see why: how do you catch someone whose behavior seems normal?

The next generation UEBA platforms offer a complete disruption of SIEM 1.0 capabilities. Rather than relying on rules, these tools build baseline profiles of every user and device on the network and then generate alerts when their activity deviates from the established norm.

Behavioral insights are enhanced with machine learning. This new approach would be prohibitively expensive, time-consuming, and nearly impossible without emerging technologies like machine learning.

Requiring security experts to manually design, implement, and maintain behavioral profiles is simply not cost-effective or efficient at enterprise scale. This would require diverting thousands of staff hours per month from other critical security tasks.

UEBA’s next-generation platforms automate many of these tasks. Instead of painstakingly configuring threat indicators and mapping specific scenarios by hand, users can simply design a basic set of indicators and let the algorithm construct and evaluate all possible permutations.

Automatically generating behavioral risk scores and prioritizing alerts accordingly improves risk coverage and reduces time spent configuring and maintaining alerts. It eliminates the need to manually assign a risk score and enables analysts to make quick, informed decisions.

The experience and professionalism of these analysts is important. You have equipped them with modern tools, but it takes human acumen to use these tools properly.

The value of expertise in detection and response

Cyber ​​attacks do not always follow a strict pattern. Every organization presents a unique risk profile with an area defined by its network architecture, IT equipment and even company culture. There is a wide variety of tactics, techniques, and procedures (TTPs) for navigating all of these variables.

Investigating security incidents is a uniquely human challenge. Log records and other data obtained from a UEBA decision play a critical role in this investigation, but they cannot complete it alone.

It takes a security professional to collect this data, analyze it, independently verify it, and orchestrate the appropriate response. The better qualified this person is, the faster and more accurate the investigation will be.

For example, consider an insider attack scenario. UEBA’s platform can alert an organization when a legitimate user upgrades their own permissions and starts tampering with files they’ve never touched before. But this information cannot reveal much about that individual’s intentions or motivations, nor whether he is working alone or as part of a group. Someone has to interpret the data before reaching these conclusions.

This is where the value of a highly skilled Managed Detection and Response (MDR) provider really comes into play. Experienced analysts spend time adjusting the UEBA algorithms to meet the specific needs of the organization itself. They continuously improve their analytical models to meet the security needs of the day and communicate their insights more effectively using customized data visualization solutions.

Castra is a respected managed service provider that uses next-generation UEBA solutions like those from my own company, Exabeam, to detect suspicious activity, conduct deep investigations and mitigate security threats.

Castra has built more than one hundred custom visualizations, dashboards and reports for Exabeam and developed more than fifty unique discovery rules and models to serve the needs of its customers. Organizations’ detection and response needs can be entrusted to their team of skilled industry experts.

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