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It starts small.
An employee clicks a link that looks legitimate. A file is downloaded, but nothing crashes. Work continues.
Behind the scenes, something may already be moving — accessing systems, gathering information, or waiting for the right moment to spread. For many businesses, this is where traditional antivirus technology reaches its limit.
“We still see a lot of businesses relying on antivirus alone,” Adam Preusler, IT Manager at Kustura Technologies in Jacksonville and Gainesville, Florida, said. “The problem is, threats don’t behave the way they used to.”
How Modern Threats Slip Through
Antivirus remains a core part of endpoint security. It’s built to recognize and block known threats — malware that has already been identified and cataloged. That protection is fast and effective. It stops a large percentage of threats before they ever run.
But most antivirus tools rely on signature-based detection, meaning they look for known “fingerprints” of malware, comparing files against a database of previously identified threats. It’s effective for catching what’s already been seen, but less so for anything new or disguised. If a threat hasn’t been cataloged, there’s nothing to match against.
As a result, antivirus technology can miss new threats, complex attacks, or unusual activity that doesn’t match anything it recognizes.
But modern attacks are designed to blend in.
Instead of relying on obviously malicious files, attackers often use legitimate tools, stolen credentials, or normal system processes to move through a network undetected.
Recent attacks show how quickly this can happen. In April 2026, hackers accessed systems at Medtronic and stole millions of records without disrupting operations, underscoring how threats can persist unnoticed without the right visibility.
EDR Changes the Equation
Endpoint Detection and Response (EDR) fills the gap antivirus can’t. Instead of just scanning files, EDR continuously monitors activity across devices — tracking processes, logins, and system behavior in real time. It uses behavioral analysis and heuristics to identify activity that doesn’t match normal operations. When something doesn’t look right, EDR flags it and can take action.
In practice, EDR acts as an early‑warning system. “Antivirus is blocking threats, but EDR is more behavior-based,” Preusler said. “It doesn’t just alert you to a problem — it can actually respond.”
That response can include:
- Stopping malicious processes
- Isolating a device from the network
- Containing threats before they spread
Importantly, Antivirus and EDR aren’t competing solutions. They’re designed to work together.
- AV handles what’s known, blocking threats quickly
- EDR handles what’s unknown, detecting behavior and responding in real time
At Kustura Technologies, these tools are deployed together as part of a layered approach — covering both prevention and response without leaving gaps.
The Piece Most Businesses Miss
Even the best tools need oversight.
Security systems can generate alerts and take automated action, but not every situation is clear‑cut. Acting too aggressively can disrupt operations; acting too slowly can let a threat spread.
“There are still times where it alerts us, and we respond,” Adam said. “That’s where having someone actively managing it makes the difference.”
Without active monitoring, alerts get missed — and in cybersecurity, minutes matter.
From Tools to Strategy
Modern endpoint security tools can block threats, monitor behavior, and respond in real time. But their effectiveness depends on how well they’re configured, monitored, and managed.
That’s where the right IT partner makes a difference. Kustura Technologies not only deploys Datto AV and EDR but also actively monitors and manages these solutions, helping keep systems secure and issues from escalating.
“Datto gives us a centralized view of all devices and alerts us when something looks off.”
As an add-on to AV and EDR, Kustura also offers rollback features that allow businesses to recover files encrypted by ransomware.
Our integrated services include:
- IT Solutions in Jacksonville, FL, and Gainesville, FL, for daily operations and long-term growth
• Digital IT Solutions and Managed IT Services tailored to your environment
• Endpoint security, including antivirus and EDR with active monitoring and rollback
• Cybersecurity Services to protect sensitive data and reduce risk
• Local IT Service Provider support when it matters most
Whether you need stronger endpoint security, better visibility, or reduced downtime, Kustura’s team can design, implement, and actively manage a solution that fits your business.
To learn more, contact info@kustura.com.
