The Hidden Security Risks of Reduced Summer IT Coverage

For most organizations, summer means vacation schedules, lighter staffing levels and slower business operations. For cybercriminals, it means opportunity.

As IT and security teams operate with reduced staffing levels, attackers actively look for opportunities to exploit slower response times and reduced oversight.

They know that suspicious activity is more likely to go unnoticed, giving them valuable time to gain a foothold within an organization's environment.

The good news is that security does not have to take a vacation when your team does. With the right mix of automation, monitoring and response capabilities, organizations can maintain strong protection even when key personnel are out of the office.

Why cybercriminals love summer

For threat actors, summer creates ideal operating conditions. Data indicates a 40% increase in cyberattacks during holiday periods, with the summer months being particularly vulnerable. During vacation season, organizations often face:

• Smaller security teams covering the same workload: Security alerts, tickets and routine tasks do not decrease during vacation season. With fewer people available, teams must manage the same volume of work with reduced capacity.
• Senior engineers take planned time off: When experienced team members are away, critical decisions and complex investigations may take longer to resolve, increasing response times during an incident.
• Institutional knowledge also becomes less accessible: The person who understands why a server behaves unusually or can quickly interpret an obscure alert may not be available. That can slow investigations and make it harder to respond efficiently when issues arise.

These staffing gaps create operational bottlenecks across the organization. Patch cycles get delayed, vulnerabilities remain unaddressed for longer and investigations may not receive immediate attention.

How summer security gaps can quickly escalate into major incidents

The real danger is not just that attacks increase during vacation periods. It is that lean staffing can make common attacks, such as phishing and Business Email Compromise (BEC), harder to spot and easier to act on.

The 2026 Kaseya Email Security Report found that as attackers increasingly using AI to make phishing attacks more convincing and scalable, traditional warning signs are becoming less reliable, making fraudulent requests harder to identify and more likely to succeed.

With approval chains disrupted and key decision makers out of the office, employees may be less likely to verify urgent requests or question suspicious emails. This creates opportunities for attackers to impersonate executives, vendors, or trusted contacts to steal credentials or divert funds.

If these attacks succeed, reduced coverage can delay detection and response, giving attackers more time to operate undetected. In security, this is known as dwell time.

The longer attackers remain inside a network, the more opportunities they have to steal credentials, access sensitive data, move laterally or launch a ransomware attack.

The real problem: Security still depends too heavily on people

Vacation schedules are not the root issue. The bigger problem is that many security operations still rely heavily on human availability.

Alert fatigue gets worse

Modern environments generate thousands of alerts every day. Most are harmless, but some represent the early stages of a real attack.

When teams are fully staffed, analysts have more capacity to investigate suspicious activity and separate genuine threats from background noise.

During vacation periods, the same volume of alerts must be reviewed by fewer people, increasing the likelihood of mistakes.

Manual processes become bottlenecks

Many critical security functions still depend on manual effort. Ticket triage, threat investigations, patch deployment and containment actions all require time and attention.

When staffing levels are reduced, these processes slow down. Every delay extends the window attackers have to exploit vulnerabilities, deepen their access or move through systems before anyone intervenes. What appears to be an operational backlog can quickly become a security gap.

Security moves at human speed, while attackers do not

Attackers increasingly use automation, AI, and prebuilt attack frameworks to scan for vulnerabilities and launch attacks around the clock.

They can send thousands of highly targeted phishing emails in minutes or automatically exploit newly disclosed vulnerabilities as soon as they become public.

Many organizations, however, still rely on someone reviewing an alert, approving a change or escalating an issue before action can be taken. That creates an imbalance. During periods of reduced staffing, the gap becomes even wider.

How AI-driven automation closes the coverage gap

If the core challenge is that security depends too heavily on human availability, the solution is not simply hiring more people. It is reducing the number of critical security tasks that require someone to be available at exactly the right moment.

AI-driven automation helps organizations maintain consistent security even when staffing levels fluctuate.

Automated patching

Automated patch management solutions can identify critical updates and deploy them in accordance with predefined policies. Instead of waiting for someone to manually schedule updates, organizations can reduce vulnerability exposure even when key personnel are unavailable.

Benefits include:

• Faster deployment of critical fixes
• Reduced reliance on individual administrators
• More consistent patching schedules

Intelligent alert prioritization

AI-powered security tools can analyze incoming alerts and prioritize those most likely to represent genuine threats. This helps smaller teams focus on what matters most, rather than spending valuable time sorting through noise.

Benefits include:

• Reduced alert fatigue
• Faster identification of high-risk incidents
• Better use of limited analyst resources

Autonomous runbook execution

A security runbook is essentially a set of instructions that defines how to respond to specific incidents. Modern automation platforms can execute portions of these workflows automatically.

For example, a system might:

• Isolate a potentially compromised device
• Disable suspicious user accounts
• Trigger remediation workflows
• Notify the appropriate stakeholders

Around-the-clock protection

Continuous monitoring helps ensure security coverage remains consistent, even when teams are operating with reduced capacity.

This allows organizations to:

• Monitor systems and user activity 24/7
• Detect suspicious behavior in real time
• Respond to threats outside business hours
• Maintain visibility during holidays, weekends and staffing shortages

Attackers do not take vacations

The threat landscape does not pause for summer holidays. If anything, attackers actively look for periods when organizations are operating with reduced coverage.

Research from KPMG highlights that vacation periods, including summer breaks and the busy holiday season from October through December, are often prime opportunities for cyberattacks.

While employees step away from their desks, threat actors continue probing for vulnerabilities, launching phishing campaigns and searching for signs of slower response times.

Security resilience goes beyond summer

The organizations best prepared for these seasonal risks are not the ones asking employees to skip vacations. They are the ones building resilient security operations that can maintain visibility, detect threats and respond consistently regardless of staffing levels.

That means reducing dependence on manual processes, automating routine security tasks and ensuring critical security functions continue operating even when key personnel are out of the office.

As attackers increasingly use AI to scale and accelerate their campaigns, understanding how these threats are evolving has become essential.

The 2026 Kaseya Email Security Report explores the latest tactics attackers are using and outlines practical steps organizations can take to strengthen their defenses.

Summer may expose the problem, but resilience is valuable year round. Read the report now.

Sponsored and written by Kaseya.