Human error in cybersecurity is still one of the biggest weak spots in business security. The reason is simple. Attackers do not always need to break strong code.
Very often, they just need a person to click, trust, approve, or share something at the wrong moment. Verizon’s 2025 DBIR says the human element was involved in about 60% of breaches. IBM’s 2024 breach report says the average global breach cost reached $4.88 million.
That does not mean employees are careless. It means modern work is fast, noisy, and full of requests. People reset passwords, approve invoices, answer support calls, open shared files, and move data all day.
Attackers know this.
They build attacks around normal behavior. NIST says phishing remains one of the most common cybercrimes, and it works by tricking people into acting before they stop to think.
Top Human Error Causes
The first cause is social engineering.
Verizon says human-driven breaches still overlap heavily with social engineering and credential abuse. NIST also warns that phishing messages often create urgency so users act now instead of checking first.
The second cause is weak identity control.
Password reuse, shared accounts, and weak forms of MFA make a bad click much worse. Verizon found that about 88% of breaches in the basic web application attack pattern involved stolen credentials.
Some MFA methods, like SMS codes and one-time pins, can still be vulnerable to phishing, while FIDO and WebAuthn methods are widely available and phishing-resistant.
The third cause is routine work under pressure.
People send files to the wrong person. They approve access too quickly. They trust a vendor’s email because the name looks familiar. Verizon says third-party involvement doubled from 15% to 30% in the 2025 DBIR, showing how trust in outside partners can widen the attack path.
The fourth cause is poor process design.
If a help desk can reset an account with weak proof, or if a remote access tool is missing strong authentication, one human mistake can become a full breach. In other words, people do not fail alone. Systems often set them up to fail. NIST’s Zero Trust guidance says no user or device should get implicit trust just because it is inside the network.
Real World Examples of Human Error Breaches
Caesars told the SEC that suspicious activity in its network resulted from a social engineering attack on an outsourced IT support vendor. That is a clean example of the problem. The attacker did not start with a firewall. The attacker started with a person in a support chain.
Change Healthcare shows the same lesson in a different way. HHS called the incident an attack of unprecedented magnitude. In Senate materials tied to the case, lawmakers said the first compromised server was not protected by multi-factor authentication, which left a basic opening after credentials were stolen.
These cases matter because they show what “human error” really means in practice. It is not only a worker clicking a bad link. It is also weak password reset checks, missing MFA, blind trust in third parties, and workflows that reward speed over verification. That is why human risk is really a design problem as much as a people problem.
Open Security helps teams cut through noise, focus on real threats, and fix what matters with clear, engineer-led guidance. Book a Human Risk Assessment.
Modern Prevention Techniques
The best way to lower human error risk is to make safe actions easier than unsafe ones. Strong identity controls matter most. In 2026, that means using phishing-resistant MFA, especially for admins, executives, and support teams. If stolen passwords cannot be used, many attacks stop right there.
Zero Trust also helps. It limits what users and devices can reach, even after login. So if one person makes a mistake, the damage is smaller.
Automation is another strong layer. It can catch strange logins, block risky emails, and flag unusual behavior before a person has time to make a bad call. That gives teams a better chance to stop small mistakes from turning into big breaches.
Training Programs That Work
Training works when it is short, relevant, and repeated often. One long session each year is not enough. People need simple lessons they can use in real situations.
The best programs are based on role. Finance teams should learn how to spot payment fraud. Help desk staff should learn how to verify identity before resetting accounts. Leaders should learn how attackers target approval workflows and urgent requests.
Good training programs also build trust. Employees should feel safe reporting suspicious emails, strange login prompts, or odd requests. Fast reporting can stop an attack before it spreads.
Recommendations For 2026
In 2026, companies should treat human risk as a business issue, not just a training issue. Start with high-risk accounts. Use phishing-resistant MFA. Add extra checks for password resets, payment changes, and sensitive data requests. Make sure vendors and contractors follow the same rules.
Then measure what matters. Track how often people report suspicious activity, where risky actions happen, and which controls reduce repeat mistakes.
Book a Human Risk Assessment
Human error still causes breaches because attackers target everyday behavior. They know people are busy, distracted, and under pressure. The answer to this problem is better systems, better training, and smarter controls that reduce risk before a mistake turns into a breach.
Open Security helps teams cut through noise, focus on real threats, and fix what matters with clear, engineer-led guidance. Book a Human Risk Assessment today.