The Vital Role of Human Intelligence (HUMINT) in Cybersecurity

Halil Öztürkci
5 min readMay 15, 2023

In the rapidly evolving landscape of cybersecurity, the importance of Human Intelligence (HUMINT) cannot be overstated. Amidst the flurry of cutting-edge technologies and automated data collection systems, there exists a vital component that can often be overlooked: the human element. Cyber HUMINT, or the application of traditional human intelligence techniques in the digital realm, provides a unique and proactive perspective on the intentions, tactics, and plans of adversaries.

To fully understand the relevance and application of Cyber HUMINT, we need to appreciate that cybersecurity isn’t just a game of advanced algorithms and sophisticated software; it’s a human battleground where motives, tactics, and strategies are as important as technical proficiency. Digital intelligence disciplines, while highly effective, can sometimes miss the nuances that a human perspective can capture. HUMINT, on the other hand, excels in understanding these nuances through building relationships, fostering trust, and demonstrating patience and precision in its execution.

“HUMINT is the most important source of intelligence for cybersecurity.” — Chris Inglis, former Director of the National Counterintelligence and Security Center

One of the unique aspects of Cyber HUMINT is that it operates through a single human collector who embodies a digital identity. This human element, often camouflaged within the digital sphere, provides “eyes and ears” into the cyber world, giving us visibility into pre-attack signals that could otherwise go unnoticed. The human collector, operating under a digital pseudonym, can infiltrate the enemy’s camp, detect their motives, understand their strategies, and provide insights that purely automated systems might miss.

A great example of Cyber HUMINT in action was the case of the infamous hacker group, DarkSide. In May 2021, DarkSide carried out a ransomware attack on Colonial Pipeline, leading to a significant disruption in the supply of gas in the Eastern United States. A HUMINT operation was initiated where human collectors assumed digital identities and infiltrated the online communities frequented by DarkSide. Over time, they established a rapport with the group, gaining valuable insights into their strategies and methods. This operation significantly aided subsequent countermeasures and mitigation efforts.

“HUMINT is essential for understanding the motivations and capabilities of cyber adversaries.” — Michael Chertoff, former Secretary of Homeland Security

Another real-world example is the detection of the Advanced Persistent Threat (APT) known as APT29 or “Cozy Bear,” believed to be affiliated with Russian intelligence. Cyber HUMINT operators were able to infiltrate online spaces where the group was active. Through careful relationship building and astute observation, they gathered critical information about APT29's tactics, techniques, and procedures (TTPs). This intelligence was invaluable in crafting defense strategies and educating the cybersecurity community about this threat.

“HUMINT is a vital tool in the fight against cybercrime.” — Robert Mueller, former Director of the Federal Bureau of Investigation

However, while Cyber HUMINT is a powerful tool, it is not a standalone solution. It works best when combined with other intelligence disciplines, including automated data collection and analysis systems. This approach, known as multi-source intelligence (or ‘INT’), provides a comprehensive picture of the threat landscape.

The benefits of such an integrated approach are many. Automated systems can efficiently process vast amounts of data, identify patterns, and flag potential threats. At the same time, HUMINT can delve into the psychological and strategic aspects, answering critical questions such as why an attacker might choose a particular target, what their ultimate goal might be, or how they might react to a specific defense strategy. This holistic understanding can significantly enhance the value of the collected data, making the intelligence more actionable and relevant.

For instance, let’s consider the case of tracking a sophisticated state-sponsored threat actor. Automated systems might be able to identify the malware signature, IP addresses, or other technical indicators associated with the attacker. Simultaneously, HUMINT can provide insights into the geopolitical motivations behind the attack, the likely targets, and potential countermeasures. The combination of these perspectives results in a robust, multi-dimensional defense strategy.

In conclusion, Cyber HUMINT is an invaluable component of any robust cybersecurity framework. Its unique ability to provide insights into the human aspects of cyber threats makes it an indispensable tool in the fight against cybercrime. However, it’s crucial to remember that HUMINT is not a silver bullet. Cybersecurity is a multi-faceted challenge requiring a comprehensive approach that integrates HUMINT with other intelligence disciplines and automated systems.

In the future, as cyber threats continue to evolve in complexity and sophistication, the role of HUMINT will become even more critical. It will be vital in understanding the psychology of the adversaries, anticipating their moves, and devising effective countermeasures. It can help us not just react to cyber threats, but also proactively prevent them.

Moreover, the human aspect of Cyber HUMINT also brings an ethical dimension to cybersecurity. HUMINT operations must be conducted with the utmost respect for privacy, legal boundaries, and human rights. As such, organizations must ensure that their HUMINT practices are guided by a clear code of ethics and rigorous oversight.

As we step further into the digital age, let’s not lose sight of the human in the machine. Cyber HUMINT reminds us that behind every line of code, every digital footprint, and every cyber threat, there are human beings with their motives, strategies, and tactics. By understanding them, we can better protect our digital world.

In the words of Sun Tzu, “If you know the enemy and know yourself, you need not fear the result of a hundred battles.” This timeless wisdom holds true in the realm of cybersecurity, where knowing the enemy often means understanding the human behind the screen. And for that, we need Cyber HUMINT — our vital “eyes and ears” in the ever-evolving cyber landscape.

In the digital world, we often focus too much on technical exploits and forget that humans are often the weakest link in the chain. HUMINT is essential in understanding the human component of security breaches. We are not just fighting against codes and machines, we are fighting against human brains. That’s why understanding human behavior through HUMINT is so crucial.

  • In 2013, the FBI used HUMINT to disrupt a cyber espionage campaign targeting U.S. government agencies. The FBI identified a group of hackers who were using spear phishing emails to steal sensitive information. The FBI then used HUMINT to infiltrate the group and gather information about their activities. This information was used to disrupt the group’s operations and to prevent them from stealing any more information.
  • In 2016, the U.S. government used HUMINT to identify and arrest a group of hackers who were responsible for the WannaCry ransomware attack. The hackers were located in North Korea, and the U.S. government used HUMINT to gather information about their activities. This information was used to identify the hackers and to arrest them.
  • In 2017, the U.S. government used HUMINT to disrupt a cyber espionage campaign targeting the Democratic National Committee. The hackers were using spear phishing emails to steal sensitive information from the DNC. The FBI then used HUMINT to infiltrate the group and gather information about their activities. This information was used to disrupt the group’s operations and to prevent them from stealing any more information.

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