What Is Threat Hunting?
Learn about how threat hunting benefits your organization, methods & tools used, and several tips.
Threat hunting is a proactive cybersecurity approach that combines digital forensics and incident response tactics to identify unknown and ongoing cyber threats that have remained undetected inside an organization's network. The primary goal of threat hunting is to discover potential incidents before they negatively impact your organization.
This can be done by:
Threat intelligence is different from threat hunting in several ways.
For instance, cyber threat intelligence provides security teams with information on current or potential threats—typically via a threat intelligence feed or platform. These feeds come in various formats. For instance, they may contain a list of domain names or Internet Protocol (IP) addresses where questionable activity has been detected by security analysts. Threat intelligence can also involve analyses of particular threat actors' behavior, identifying the tools and procedures hackers use in their attacks.
Threat hunting, on the other hand, proactively goes after certain threats by examining systems and the data they produce vs. merely gathering information from intelligence feeds.
Cyber threat hunting plays a unique role in enterprise security, particularly because it uses a combination of human intelligence and engineering to search for indicators of compromise (IOCs). By leveraging the IOC search process, threat intelligence analysts can more efficiently examine an organization's environment and weed out events that require more in-depth analysis.
This threat hunting methodology improves the accuracy of threat detection, lowers the risk of an event, and enables proactive discovery and mitigation of hidden threats. The sooner threats are discovered and reported to an incident responder, the sooner they can be eliminated, ensuring networks and data remain safe.
Threat hunting is a proactive approach of dealing with attacks, while incident response is a reactive strategy. Used together, threat hunting enhances incident response. In other words, to strengthen your cybersecurity posture and achieve cyber resilience, both threat hunting and incident response are necessary. A well-crafted threat hunting program supplements incident response in various ways, primarily by identifying potential threat variables that can put an organization in harm's way.
Threat hunting initiates the incident response process once it identifies dangerous activity or uncovers a network vulnerability. Also, organizations can use threat-hunting data to create an effective incident response strategy. For example, if the threat-hunting process discovers a potential threat and how it may attack network resources, the incident response team can use this data to prepare ahead of time and maximize resiliency in the wake of an attack.
Detecting advanced attacks using threat hunting involves three phases: trigger, investigation, and resolution.
If an anomalous activity is detected, an alert gets triggered. Because threat detection tools will point out exactly where the threat is located, cybersecurity teams know which specific area of the network to examine. Security teams can then develop a hypothesis regarding the threat's activities within the system.
The next step is to look at various tactics, techniques, and procedures (TTPs) to find new threat behaviors and patterns in the data that has been gathered. Data examination continues until the hypothesis developed in the previous step is either supported or disproved.
Once the nature of the threat has been established, security professionals should immediately neutralize the attack, then take steps to understand what vulnerability caused it in the first place. This helps improve security and prevent future intrusions.
Security providers offer MDR services as an outsourced service to protect organizations from threats. A remote team of threat hunters identifies, analyzes, investigates, and responds to threats on behalf of the organization that engaged their service.
Security information and event management (SIEM) aggregates security information and event management data from different sources. It uses software products and services that provide real-time analysis of the security alerts produced by various hardware and software components in your network.
Security analytics combines software, algorithms, and analytical techniques to find possible vulnerabilities in IT systems. Because security analytics tools provide easy-to-digest graphs and charts about threat data, detecting correlations and patterns is faster and much easier.
As a cyber hunting tool, an endpoint detection and response (EDR) system performs the following functions:
For threat hunting to be effective, teams must focus on three main goals: which information to gather and in what context, how to obtain this information, and how to analyze the data to support or refute a threat hypothesis.
Here are five tips to do this effectively:
Threat-hunting techniques can involve the following:
To start threat hunting, use tools such as:
The types of threat hunting include:
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