The Human Element: Addressing Human Error in Cyber Security
Organizations invest heavily in technologies like advanced firewalls and encryption, building formidable digital fortresses. But as every red teamer knows, the easiest way in is often not through a locked door, but through an unlocked mind. A single truth has been consistently proven; people, not technology, are the primary target. This is why it’s important to maintain a healthy level of paranoia. It’s not about fear; it’s about vigilance.
In the vast majority of security incidents we investigate, the entry point isn’t a complex technical flaw. It’s a social engineering tactic that exploits human trust or urgency. This is why our focus is on building a robust human firewall.
To build a strong security posture, it’s crucial to understand how simple human mistakes create major security vulnerabilities. Let’s examine the most frequent types of human error and the practical steps your team can take to address them.
What is Human Error in Cyber Security?
Human error in cybersecurity refers to an unintentional action or a lack of action by an employee that causes security vulnerabilities. By themselves, these aren’t malicious acts. Instead, they are mistakes made by well-meaning individuals who may be distracted, uninformed or stretched too thin. However, these errors can create vulnerabilities, facilitate cyberattacks and lead to significant data loss.
Some of the most common examples of human error in cyber security include:
Falling for Phishing Scams
An employee receives a deceptive email that appears to be from a legitimate source, such as a bank or a senior executive (an attack vector known as spear phishing). These emails are often personalized and sent out to one employee rather than en masse to make them seem more legitimate.
The targeted employee performs an action such as downloading a malware-infected attachment or updating their login credentials, giving attackers access to sensitive data.
Re-Using Passwords
Many employees use a simple, easy-to-guess password and reuse the same password across multiple systems. Doing so can put your sensitive data at risk.
A primary risk is the misuse of credentials through credential stuffing and credential harvesting. Credential harvesting involves attackers stealing usernames and passwords, often through phishing or malware. These stolen credentials are then used in credential stuffing attacks, where automated bots attempt to log in to various online services using lists of leaked credentials from data breaches.
This method exploits the common user habit of reusing the same password across multiple sites. The most effective defense against this sophisticated form of attack is Multi-Factor Authentication (MFA), which adds a crucial second layer of verification and can stop attackers even if they have a user’s correct password. That said, not all MFA is equal: authenticator apps and passkeys hold up far better than SMS text codes, which attackers have learned to intercept and bypass.
Ensuring your employees stay up-to-date with cybersecurity training and reinforcing good cybersecurity practices, such as using strong passwords and using MFA, is essential in mitigating the risks of cyber attacks.
Improper Handling of Data
The misdelivery of data can leave your business vulnerable to attacks. If you’re not careful, you can end up sending sensitive information to the wrong recipient. Spelling the email address wrong or even relying too heavily on auto-suggest features when adding recipients can lead to data breaches.
With misdelivery being one of the most common ways sensitive data can be compromised, it’s important to always double-check who you’re sending information to before clicking send.
Unpatched Vulnerabilities
One of the most significant cybersecurity threats is the failure of organizations to promptly patch and update their systems. Threat actors actively scan for and exploit known vulnerabilities in software and operating systems. These vulnerabilities are often publicly disclosed, and security patches are released by vendors specifically to fix them. However, organizations may delay these critical updates due to a lack of resources, concerns about system downtime or complex IT environments. That gap between “patch available” and “patch applied” is a known vulnerability (sometimes called an “n-day”), and it’s a favorite entry point for data breaches and ransomware. It’s worth being precise here, because the terms get mixed up constantly: this is different from a true zero-day, where no patch exists yet and even a diligent team has nothing to apply. Prioritizing and implementing a robust patch management policy is essential for an organization’s security posture.
Loss or Theft of Devices
When it comes to cyber attacks, many people think their personal belongings, such as their laptop, USB drive or even a personal password book are safe. But losing them or leaving them out in the open can end up with them being stolen, leaving your business vulnerable to cyber attacks, allowing physical breaches to quickly become digital threats. The fix here is mostly mechanical: full-disk encryption (BitLocker on Windows, FileVault on Mac) plus the ability to remotely wipe a managed device turns a lost laptop into an expensive annoyance instead of a reportable breach.
How Cyber Attackers Take Advantage of Human Error
Cybercriminals are masters of psychological manipulation and often prefer to target people rather than systems. This practice, known as social engineering, exploits human tendencies like trust, authority, urgency, fear and curiosity to trick people into divulging sensitive information or performing actions that compromise security.
With human error being such a commonly exploited weakness, it’s important to know how vulnerabilities are exploited so businesses can develop a better security posture and keep their data safe.
Key exploitation tactics include:
Phishing
Attackers send fraudulent emails designed to create a sense of urgency or fear.
For example, an email might claim the user’s account has been compromised and they need to click a link to verify their password immediately. That link usually leads to a convincing fake login page built to capture what you type, or to a site that quietly triggers a malware download. Either way, a single click can be enough.
Pretexting
In this scenario, the attacker creates a fabricated scenario (a pretext) to gain the victim’s trust. They might impersonate an IT support technician needing the user’s login credentials to “fix” a non-existent problem, allowing them access to your login information and, subsequently, your sensitive data.
Baiting
This tactic involves luring a victim with a false promise. An attacker might create an ad advertising free media downloads, a type of baiting commonly referred to as “malvertising”. Attackers inject malicious code into legitimate digital ads, making the ads look genuine and driving people to click them.
Baiting isn’t always digital, however. A bad actor might leave a malware-infected USB drive in an office lobby, counting on human curiosity to lead an employee to plug it into their computer.
How to Reduce Human Risk
While human error can’t be eliminated entirely, its risk can be significantly managed by fostering a strong security culture and implementing a multi-layered defense strategy. The goal is to build a human firewall, where employees become an active part of the organization’s security posture.
Being proactive and implementing security from the beginning, a “secure-by-design” approach, is more effective and efficient than adding it on later.
Key strategies include:
Continuous Security Awareness Training
Move beyond a once-a-year presentation or training video. Effective training is ongoing, engaging and relevant. Regular phishing simulations, where fake phishing emails are sent to employees, are an excellent way to teach employees what to look for, measure the effectiveness of the training and identify where vulnerabilities exist. One honest caveat: training never gets click rates to zero, so put extra attention on the handful of roles and people that attackers target most.
Establish Clear, Enforceable Policies
Simple, easy-to-understand security policies are crucial. This includes strong password requirements, mandatory multi-factor authentication (MFA) and clear guidelines for data handling.
Implement the Principle of Least Privilege (PoLP)
Employees should only be able to access data and systems that are necessary to do their jobs. This minimizes the potential damage if an account is compromised. It’s the same instinct behind zero trust; don’t assume access, grant only what’s required.
Leverage Technology
Use tools that can serve as a safety net for human mistakes. This includes advanced email filtering to block phishing attempts, endpoint protection to secure devices and automated systems that flag any cloud misconfigurations.
Protect Your Business from Cyber Attacks with NTS
One the biggest threats to your organization’s security is often your own employees. Human error remains a leading cause of data breaches, whether through falling for a phishing scam, accidentally exposing sensitive information or using weak, easily guessed passwords. While security awareness training is a crucial first step, how can you be sure your team is truly prepared to defend against a real-world attack?
That’s where NTS comes in. A strong security posture isn’t a one-time project; it’s a culture. We partner with you to turn your people (the part of your organization attackers target most) into a dependable line of defense. Security isn’t a one-and-done project; it’s a habit, and we help you build it.
NTS takes a proactive approach to cybersecurity that goes beyond just firewalls and antivirus software. Our cyber security team partners with you to create a culture of security within your organization. We offer a cybersecurity assessment that not only identifies vulnerabilities in your systems, but also works with your team to create and implement evolving security protocols. NTS provides comprehensive training to educate your employees on how to recognize and avoid threats, so your team becomes a dependable line of defense rather than the easiest way in.
By simulating the tactics of a real attacker, penetration testing goes beyond theoretical training to provide a practical assessment of your security posture, including the human element. Our social engineering services, a key component of penetration testing, can reveal how your employees respond to scenarios like phishing, vishing (voice phishing) and smishing (SMS phishing) attacks. This allows you to identify specific vulnerabilities and provide targeted training to strengthen your team’s defenses.
Our comprehensive threat monitoring and detection, combined with our expert team, ensures that we’re always one step ahead of bad actors. In the event of an incident, our rapid response team is here to help minimize downtime and protect your valuable data. NTS gives you peace of mind knowing that your business is protected from the inside out.
Don’t wait for a breach to happen; be proactive with NTS.