Threat hunting is a proactive cybersecurity practice that allows organizations to detect and neutralize advanced threats before they cause harm. In a context where attacks are becoming increasingly sophisticated and the average time an attacker spends within a network remains alarmingly high, relying solely on automated detection tools is no longer sufficient.
In this article, we explain what threat hunting is, how to implement it step by step, what you need to get started, and why it has become a pillar of modern corporate cybersecurity.
What is Threat hunting?
Threat hunting is a proactive process of searching for and detecting cyber threats capable of evading traditional security defences. Unlike reactive methods that rely on automated alerts, threat hunting involves actively searching for suspicious or malicious activity within the system or network, both internally and externally. The primary goal of threat hunting is to identify, mitigate, or nullify advanced threats before they can cause significant damage. This includes the detection of advanced persistent attacks (APTs), malware, exposed vulnerabilities and other risk factors that may not be detected by conventional security tools.
Threat hunting methodology
Now that you know exactly what Threat hunting is, it is essential that you discover its methodology. This process generally follows an iterative cycle that includes the following phases:
- Hypothesis. Threat hunting starts with formulating threat hypotheses based on threat intelligence, behavioral analysis, and knowledge of the environment.
- Data collection. Data is collected from a variety of sources, such as event logs, network monitoring, and endpoint data.
- Analysis. The collected data is analyzed for unusual patterns or indicators of compromise (IoCs).
- Research. If suspicious activity is identified, further investigation is carried out to determine the nature and extent of the threat.
- Response. If a threat is confirmed, measures are taken to contain, nullify, or mitigate the impact.
Threat hunting uses a variety of tools and techniques, including:
- Intrusion detection systems (IDS): to monitor and analyze network traffic for suspicious activity.
- Log and behavioral analysis: to review and correlate events recorded in different systems and identify deviations in the normal behavior of users and systems.
- Threat intelligence: to obtain information on open breaches and exposed vulnerabilities on the web, dark web, deep web, and social networks.
How to do Threat hunting: steps to follow
Implementing threat hunting effectively requires a structured process. These are the fundamental steps:
- Define objectives and strategy. Determine what you want to achieve, identify advanced threats or improve incident detection, and develop a strategy that includes the necessary resources, tools, and procedures.
- Form a Threat hunting team. The team must have experience in cybersecurity and data analysis, and it is essential that they stay up to date on the latest threats and techniques.
- Collect and analyze data. Compilation through event logs, network traffic, and Intrusion Detection Systems (IDS), automated Cyberintelligence. platforms.
- Formulate the hypotheses. Based on threat intelligence and behavioral analysis, hypotheses about potential threats are formulated, and steps are defined to investigate each.
- Execute the hunt. Active searches of collected data are conducted to identify suspicious activity. If indications of a threat are found, further investigation is conducted to confirm the nature and extent.
- Respond and mitigate. When a threat is confirmed, measures are taken to contain, nullify, or mitigate its impact.
- Documentation and reporting. All findings and actions taken are documented, and reports are provided to senior management and cybersecurity managers to improve defenses and security strategies.
What is needed to start threat hunting?
To implement an effective Threat Hunting program, we need to prepare and organize several key components to ensure its success. These fundamental elements include proper team selection, collection and analysis of relevant data, and integration of threat intelligence.
Human capital
Selecting the right threat hunting team is crucial to the success of the strategy. A threat hunting team should combine technical skills, practical experience, and the ability to work as a team. The threat hunting team should be composed of professionals with backgrounds in cybersecurity, data analysis, attacker techniques and procedures, with official certifications such as Certified Information Systems Security Professional (CISSP), Certified Ethical Hacker (CEH), or GIAC Certified Incident Handler (GCIH), and, if possible, extensive hands-on experience. The team must be able to work collaboratively and communicate their findings effectively to other departments and senior management. They should be continuously updated on cybersecurity and threats.
Data
To initiate threat hunting, it is essential to collect and analyze a variety of data that can indicate suspicious or malicious activity. This data should be extracted from event logs, such as system or security logs; network traffic, such as packet captures or network flows; endpoint data, such as activity logs or sensor data; threat intelligence, such as indicators of compromise or information gathered from monitoring external sources; user data, such as authentication logs or behavioural analysis; and data on exposed vulnerabilities and open breaches extracted from scans of the organisation’s internal and external attack surfaces.
Threat Intelligence
Threat Intelligence focuses on the collection, analysis, and utilization of information about potential and current threats that may affect an organization’s security. It provides detailed insight into malicious actors, their tactics, techniques, and procedures (TTPs), as well as exposed vulnerabilities and open security breaches that can be exploited to execute an attack. In threat hunting, threat intelligence serves as a solid foundation, guiding the team in identifying and mitigating risks. With access to up-to-date, accurate threat information, threat hunting professionals can anticipate and detect suspicious activity before it escalates into a security incident. In addition, Threat Intelligence enables prioritization of countermeasure efforts by focusing on the most relevant and immediate threats to the organization.
3 reasons why threat hunting is necessary in your organization
Threat hunting offers several key features and advantages that distinguish it from traditional security practices. The most relevant of these are highlighted below:
1. Proactive and immediate approach
Unlike traditional security methods that tend to be reactive, threat hunting empowers organizations to anticipate threats before they materialize. This proactive approach involves actively looking for signs of malicious activity rather than waiting for incidents to occur. By taking an immediate approach, threat hunting professionals can identify and neutralize threats in real time, minimizing the potential impact on the organization. This not only reduces incident response time but also improves the organization’s ability to prevent future attacks. In addition, the proactive approach allows organizations to stay one step ahead of attackers by quickly adapting to new tactics and techniques used by malicious actors.
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2. Continuous improvement
Threat hunting enables organizations to constantly evolve and adapt to new threats and tactics employed by malicious actors. Through threat hunting, security teams can identify patterns and trends in threats, allowing them to continuously adjust and improve their defense strategies. Continuous improvement involves a constant feedback loop in which threat hunting findings are used to refine security policies, update detection tools and techniques, and train staff on new defense tactics. This process not only strengthens the organization’s security posture but also increases resilience to future attacks.
3. High adaptability
Through threat hunting, organizations can quickly adjust their defense strategies in response to emerging threats and evolving attacker tactics. Adaptability in threat hunting involves continuously updating the tools, techniques, and procedures used to detect and mitigate threats. Thanks to this adaptability, security teams can respond more effectively to new challenges and vulnerabilities that emerge in the cybersecurity landscape. In addition, adaptability enables organizations to integrate new technologies and methodologies into their defense processes, thereby improving their ability to protect their critical assets.
Types of threat hunting according to need
Organizations can adopt different threat hunting models depending on their specific needs. Each approach offers a different perspective for identifying and mitigating threats.
Intelligence models
These models focus on identifying cyber threats using Cyber Threat Intelligence. They enable organizations to identify suspicious activities and patterns of behavior that could indicate the presence of malicious actors, as well as exposed vulnerabilities and open gaps in the network, using indicators of compromise obtained from threat intelligence sources. They address the organization’s need to detect, monitor, and understand threats at its external perimeter to neutralize them or respond effectively to their use by cybercriminals.
Hypothesis models
These models focus on formulating hypotheses about potential cyber threats. They rely on the knowledge and experience of security analysts to develop plausible assumptions about potential attacks, how they could be executed, and the vulnerabilities that could be exploited. They respond to the organization’s need to anticipate any threat and proactively adapt to new ones as they emerge.
Personal models
These are advanced models tailored to an organization’s specific needs. They are based on in-depth knowledge of the corporate environment, weaknesses, and particular requirements, and use the organization’s own data and patterns to identify potential threats. They respond to the need to detect specific threats, adapt the strategy to their infrastructure and operations, and optimize organizational resources. These models can be run through human teams, advanced Cyber Intelligence platforms that allow search customization, or a combination of both.
Discover how Kartos helps you with your threat hunting strategy
Kartos is the corporate cyber surveillance platform developed by Enthec, enabling you to implement and scale a threat-hunting strategy within your organization. Its continuous, automated, and customizable monitoring capabilities of the internet, the deep web, the dark web, and social networks keep you permanently informed about exposed vulnerabilities and open gaps that can become attack vectors.
Thanks to its proprietary AI, Kartos eliminates false positives in search results, ensuring that every piece of data it receives is truly useful for decision-making and neutralizing latent threats. Furthermore, it issues real-time alarms, it sends constantly updated information, and generates detailed reports on its findings.
Want to know how Kartos can strengthen your threat hunting program? Please contact our team to learn more about the full range of possibilities our corporate surveillance solutions offer.
