Why “Human Error” Isn’t the Real Cause of Cyber Breaches
When a breach occurs, the explanation is often simplified:
Someone clicked a phishing email.
Someone reused a password.
Someone made a mistake.
But cybersecurity failures rarely begin and end with a user action.
In a recent episode of the The Security Strategist, Ostra Security founder Michael Kennedy joined host Richard Stiennon to discuss why modern cyber incidents are often the result of system design limitations rather than individual user mistakes.
Listen to the full podcast episode here.
The Cybersecurity Industry’s Overfocus on Human Error
Security awareness training and phishing simulations have become standard tools for measuring cybersecurity maturity.
Organizations often track:
- Phishing click rates
- Training completion percentages
- Employee reporting behavior
These metrics can provide insight into employee awareness—but they don’t necessarily measure whether an organization can withstand a real attack.
Attackers understand that even well-trained users occasionally make mistakes. The question security leaders should ask isn’t whether a user clicked.
It’s what happened next.
What Outcome-Based Cybersecurity Means
In the podcast conversation, Kennedy emphasizes the importance of measuring security outcomes instead of user behavior.
Effective cybersecurity programs focus on operational performance during an attack.
Key indicators include:
- Detection speed: How quickly malicious activity is identified
- Response capability: How effectively the security team investigates and contains threats
- Blast radius control: How well systems prevent attackers from moving across the network
These metrics reveal whether a security program is truly reducing risk.
They also align with modern security approaches such as:
- Extended Detection and Response (XDR)
- AI-assisted security operations
- Zero Trust architecture
- Managed detection and response services
Each of these strategies focuses on rapid detection, containment, and resilience rather than assuming users will never make mistakes.
Why Security Culture Matters More Than Blame
Another key takeaway from the discussion is the importance of organizational culture.
When employees fear punishment for security mistakes, incidents are often reported late—or not at all.
This delay can dramatically increase the impact of an attack.
Organizations that adopt a no-blame reporting culture tend to detect threats earlier because employees feel comfortable flagging suspicious activity immediately.
In these environments, employees effectively become an additional layer of detection rather than a perceived risk factor.
The Metrics CISOs Should Be Tracking Instead
Security leaders are increasingly being asked to demonstrate measurable outcomes from their cybersecurity investments.
Instead of relying solely on awareness metrics, organizations should evaluate:
- Mean time to detect (MTTD)
- Mean time to respond (MTTR)
- Attacker dwell time
- Containment effectiveness
These operational metrics better reflect whether an organization can limit damage during an active attack.
Ostra’s Perspective: Engineering for Real-World Security Outcomes
At Ostra Security, this philosophy shapes how we approach security operations.
Cybersecurity programs shouldn’t rely on perfect user behavior. They should assume mistakes will happen—and build systems capable of detecting, containing, and responding to threats quickly.
That’s why modern security operations emphasize:
- Continuous monitoring
- Threat hunting
- rapid detection and response
- active remediation
Security isn’t about eliminating risk entirely. It’s about reducing impact when incidents occur.
Listen to the Full Podcast Conversation
The full discussion dives deeper into how security leaders can rethink metrics, culture, and system design.
🎧 Listen to the full episode of The Security Strategist featuring Michael Kennedy
