Expert Says These Are The 6 Biggest Cybersecurity Mistakes CEOs Make (And It Costs Them Millions)
Six preventable CEO mistakes are behind most of today’s costly data breaches
Key Points:
- Cybersecurity expert exposes the costly leadership mistakes that put organisations at risk, from poor password culture to neglecting employee training
- Expert identifies six common CEO-level oversights including lack of incident response plans, overreliance on IT teams, and failure to invest in cyber insurance
- Atlantic.Net CEO warns that 84% of organisations have experienced a cybersecurity incident in the past three years, with many breaches stemming from preventable leadership decisions
When a major data breach makes headlines, the immediate reaction is often to blame outdated technology or sophisticated hackers. But, according to cybersecurity experts, the real vulnerability frequently starts in the C-suite. A 2025 study of executives found that 84% of organisations experienced a cybersecurity incident in the past three years, and many of these breaches were preventable with better leadership decisions.
“The biggest mistake I see CEOs make is treating cybersecurity as a technical checkbox instead of a strategic business priority,” says Pete Cannata, COO of Atlantic.Net, a leading global cloud infrastructure provider with over 30 years of experience delivering secure, compliant hosting solutions. “When leadership doesn’t set the tone on security culture, the entire organisation becomes vulnerable.”
Below, Cannata outlines the most common cybersecurity mistakes at the leadership level and explains how these oversights create organisational vulnerabilities that can cost companies millions.
The 6 Cybersecurity Mistakes That Start in the C-Suite
1. Neglecting Employee Training and Security Awareness
The majority of data breaches don’t start with sophisticated hacking, instead beginning with an employee clicking a phishing email or using weak credentials. Yet CEOs often fail to prioritise ongoing security training for their teams.
“Your employees are either your first line of defence or your biggest vulnerability,” Cannata explains. “When leadership doesn’t invest in regular security training, they’re essentially leaving the front door unlocked.”
Without consistent education on recognising phishing attempts and social engineering tactics, even well-intentioned employees can inadvertently compromise an entire network. Training needs to be continuous and adaptive to evolving threats.
2. Ignoring Software Patching and Updates
Outdated software is one of the easiest entry points for cybercriminals, yet it’s common for organisations to operate with unpatched systems for months. This tends to happen when CEOs don’t understand the urgency or haven’t allocated resources for timely updates.
“Hackers actively scan for known vulnerabilities in outdated software,” says Cannata. “When patches are delayed because they’re seen as disruptive to business operations, you’re giving attackers a roadmap into your systems.”
The WannaCry ransomware attack of 2017 exploited a Windows vulnerability for which a patch had been available for months. Leadership must prioritise patching schedules and understand that short-term inconvenience prevents catastrophic long-term damage.
3. Poor Password Culture and Authentication Practices
Weak passwords are still one of the most common security failures, and it starts with leadership not enforcing strong policies. Simple passwords, password reuse across multiple platforms, and a lack of multi-factor authentication (MFA) create easy targets.
“I’ve seen executives use the same password for their email, banking, and company systems,” Cannata notes. “That’s both risky and negligent.”
Implementing mandatory MFA, password managers, and regular password rotation policies should be non-negotiable at every level of the organisation, starting with leadership.
4. Lacking a Comprehensive Incident Response Plan
When a breach occurs, every minute counts. Yet a lot of CEOs operate without a documented, tested incident response plan. The absence of clear protocols leads to chaos, delayed responses, and compounded damage.
“You don’t want to be left figuring out your response during an active breach,” Cannata emphasises. “Companies without a plan waste valuable time making decisions that should have already been outlined.”
An effective incident response plan includes defined roles, communication protocols, containment strategies, and recovery procedures. It should be regularly tested through simulations so teams know exactly what to do when an incident occurs, not if.
5. Overreliance on IT Teams Without Strategic Oversight
CEOs frequently delegate cybersecurity entirely to their IT departments without understanding that security requires strategic business decisions, not just technical implementation.
“IT teams can implement firewalls and monitor networks, but they can’t make business decisions about risk tolerance, budget allocation, or organisational priorities,” says Cannata. “That’s the CEO’s job.”
Security strategy needs to be integrated into business planning. Leaders must understand their threat landscape, determine acceptable risk levels, and ensure security considerations are part of every major business decision.
6. Failing to Invest in Cyber Insurance
Despite the frequency and cost of cyber incidents, many CEOs still view cyber insurance as an unnecessary expense. This shortsighted approach leaves companies financially exposed when breaches occur.
“Cyber insurance often includes access to forensic experts, legal counsel, and crisis management resources,” Cannata explains. “Without it, you’re facing not just the breach costs but also figuring out a response on your own.”
Building a Prevention Strategy
Addressing these mistakes requires a shift in how leadership approaches cybersecurity. Here are key recommendations from Cannata:
- Make Security a Board-Level Priority: Cybersecurity should be a standing agenda item in board meetings. Regular risk assessments and security updates ensure leadership stays informed and engaged.
- Build a Security-First Culture: When CEOs model good security behaviour (using MFA, attending training, asking questions) it signals to the entire organisation that security matters. Culture starts at the top.
- Invest in Proactive Defence: Prevention is far cheaper than remediation. Allocate a budget for security infrastructure, training, insurance, and regular audits before an incident forces your hand.
- Establish Clear Accountability: Assign ownership of cybersecurity initiatives across departments. Security isn’t only IT’s responsibility. It touches every part of the business.
Pete Cannata, COO of Atlantic.Net, commented:
“Too many CEOs still see cybersecurity spending as a cost centre rather than a business continuity investment. When you look at the average breach costing organisations millions in remediation, legal fees, regulatory penalties, and lost customer trust, the ROI on proactive security becomes obvious.
“The companies that weather cyber incidents best are those whose leadership viewed security as insurance for their entire business model, not just their IT infrastructure. Every dollar spent on employee training, incident response planning, and security infrastructure is a dollar that protects your revenue, reputation, and ability to operate.
“In today’s threat environment, the question is whether you’ll be prepared when a cyberattack occurs. Leadership that understands this distinction makes security decisions that protect the business for the long term.”