In this year's edition of its annual security operation center (SOC) survey, the SANS Institute identified the four most common SOC deficiencies. The root of these shortcomings can be traced to a familiar source: people, processes, and proper planning and implementation of technology. Here's a look at the worst four and what security teams can do about them.
Most SOCs lag in automation and orchestration because the SOC team doesn't know what processes should be automated. An organization's employees are its first line of defense. Start by interviewing SOC personnel to understand their responsibilities and identify repeatable processes, such as evidence gathering during an incident (IP/URL reputation, whois information, etc.) that are time consuming and easily automated.
Next, use risk and security assessments to identify assets and vulnerabilities and provide metrics to monitor security-monitoring performance. These data points will help expose repeatable processes that can be automated.
Lack of integration between security tools are also a roadblock to automation and orchestration. Since organizations layer security defenses to protect against multithreaded attacks, security teams often lack a clear understanding of their product architectures and how they can work in concert with each other.
Unfortunately, there is no easy fix to this problem. Some alternatives include performing proof of concept (POC) engagements and encouraging security vendors to "lean in" and gain a better understanding of the organization's environment. By doing so, SOCs can evaluate new products, identify any gaps, and correct them before deployment.
Finally, SOCs that fall short in terms of processes and playbooks typically have a low-maturity security program. For these organizations, working with a managed security service provider or managed detection and response service are good options.
2. Asset Discovery and Inventory
Asset inventory and management is hard. Even with automated tools in place, technology teams still have some heavy lifting to perform, especially in the initial up-front investment of time and energy. In a world of instant gratification, most organizations expect that if they invest in a tool, it should accelerate business processes. Unfortunately, due to the dynamic nature of IT environments and technology, SOC teams are too often required to roll up their sleeves.
Any asset management program requires planning and a full understanding of the environment. Without these crucial steps any tool will fail to meet expectations. Risk and security assessments against your environment are a good first step. The discovery phase of vulnerability assessments will produce a baseline that can be used as a jumping-off point. It's important to bear in mind there is no "one-size-fits-all" solution, therefore organizations should expect some pain and heartache when implementing an asset management solution. However, when deployed correctly, it will pay dividends in the long run.
3. Manual Event Correlation
This seems counterintuitive, but there's a good explanation. Deploying a SIEM is not as simple as turning it on and pointing log sources to it. Organizations must understand their log sources and the overall visibility they provide into the environment.
To achieve this visibility, a network audit is required. The findings will identify where network taps should be located, which devices consistently communicate with each other, and any gaps or obstacles that must be overcome. Obstacles such as web proxies masking a true source or short DHCP leases may prevent an investigator from locating a potential victim and limit an organization's SIEM from conducting the proper correlation between events. Understanding these gaps and the limitations of the SIEM can help SOCs better understand where manual correlation may still be necessary.
4. SOC/NOC Integration
This deficiency is a cultural problem. SOC teams have one agenda (detection and protection), while Network Operations Teams (NOCs) have another (maintaining uptime and availability). These two are often at odds with each other. Take, for example, the age-old conflict of least privilege. NOC teams want to have the keys to the castle and be able to move freely about the environment. SOC teams are focused on locking down the environment to better identify anomalies that may indicate malicious activity.
To complicate matters, both groups are usually under-resourced and overworked due to the lack of qualified candidates and the continuously mounting responsibilities associated with maintaining and securing a network. To bridge the gap, organizations can institute processes and procedures that outline rules of engagement between the SOC and NOC teams. These will provide both departments with clear guidelines for their interactions and how the partnership should function.
With proper planning and deployment, and with the right processes and procedures in place, overcoming these SOC deficiencies is within reach of most organizations. For those that lack the appropriate resources or security program maturity, a managed security service provider or managed detection and response service is a good alternative.
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