Human factor errors in companies: The risk of authentication fatigue

Currently, more than 75% of security breaches are related to human factor errors. As companies strengthen their protection systems, cybercriminals are increasingly targeting employees, exploiting their daily habits to achieve higher success rates by taking advantage of a lack of cybersecurity awareness.

Failing to manage these types of risks can lead to unauthorized access, operational disruptions, financial losses, and a direct impact on a company’s reputation and business continuity.

What is authentication fatigue and why can it compromise company security?

Authentication fatigue, also known as “MFA fatigue,” is a technique in which cybercriminals overwhelm users with access requests until they eventually approve a login attempt out of exhaustion or distraction. This type of attack directly exploits the human factor to compromise corporate accounts.

Relying solely on passwords and standard MFA requests is no longer enough. A single fraudulent approval can allow unauthorized access, lateral movement within the network, and the exposure of sensitive company information.

How to detect authentication fatigue attacks in real time

Detecting these types of attacks early is key to preventing unauthorized access and reducing the impact of a security incident. Some of the most common warning signs include:

• Multiple consecutive MFA requests: receiving several authentication prompts within a few minutes for the same account is a clear indicator of a fraudulent access attempt.
  
  
• Access outside normal working hours: logins during unusual hours may indicate the misuse of corporate credentials.
  
  
• Login attempts from anomalous locations: access attempts from countries or regions unrelated to the user’s activity should trigger immediate alerts.
  
  
• Unusual access behavior: sudden changes in devices, IP addresses, or authentication patterns may indicate a compromised account.
  
  
• Real-time monitoring and alerts: centralizing authentication logs allows organizations to detect anomalies and block access before the incident escalates.

Best practices and recommendations to reduce cyberattacks caused by human factor errors

1. Adopt a Zero Trust access model

Eliminate default trust within the corporate environment and continuously validate every access request. Each request should be verified based on the user’s identity, the device being used, and the context of the access attempt, reducing the likelihood of intrusions even if credentials have been compromised.

2. Apply access control policies

Establish dynamic policies that adjust permissions based on factors such as location, network, device, and employee role. If access is attempted from an unusual or unauthorized environment, the system should automatically restrict or block the request.

3. Automate incident detection and response

Integrate monitoring systems with automated response processes. This enables real-time action when signs of compromise are detected, such as isolating accounts, revoking active sessions, or blocking affected devices.

4. Implement multi-factor authentication resistant to fatigue attacks

Replace passive validation methods with stronger mechanisms such as physical security tokens, active challenge-based applications, or verification systems that require conscious user interaction, preventing automatic or ambiguous approvals.

5. Monitor anomalous authentication patterns

Analyze behaviors in real time, such as spikes in MFA requests, repeated login attempts, or connections from unusual locations. These indicators help detect MFA fatigue attacks or potential credential compromise.

6. Continuous cybersecurity training for employees

Train users to recognize social engineering techniques and understand the risks of approving access requests without verification. Proper cybersecurity awareness significantly reduces the likelihood of human error in critical environments.

ESED: Proactive cybersecurity for companies

Cybersecurity can no longer be approached reactively. Threats such as authentication fatigue demonstrate that a single human error can compromise an entire company’s operations.

At ESED, we work with a proactive approach based on continuous prevention, detection, and response through a fixed monthly fee model. This allows organizations to maintain a consistent level of protection without unexpected costs, while continuously evolving their defenses against increasingly sophisticated threats.

In addition, we provide companies with a quick cybersecurity assessment. In just a few minutes, you can evaluate your organization’s level of exposure and gain a clear understanding of your main risks, serving as a starting point to strengthen your cybersecurity strategy.