Cybersecurity
Managed EDR vs antivirus: why traditional AV is not enough
Antivirus alone no longer stops modern attacks. Managed EDR watches how software behaves, catches ransomware and credential theft that antivirus misses, and contains a compromised device before it spreads. Here is the difference, and why insurers now expect EDR.
Antivirus blocks files it already knows are malicious. Managed endpoint detection and response watches how software behaves on your devices, so it can catch ransomware, credential theft, and attacker movement that have no known signature, then isolate the affected device before the damage spreads. For most businesses in 2026, antivirus alone is no longer enough, and cyber insurers have started to say so.
What antivirus does, and where it stops
Traditional antivirus compares files against a list of known threats. That works against commodity malware, but modern attacks often use legitimate tools, stolen passwords, and brand-new code that no signature list has seen. Once an attacker is inside using valid credentials, antivirus has little to say, because nothing it is scanning looks like a known virus.
What managed EDR adds
EDR shifts the question from what is this file to what is this device doing. It watches for the behavior of an attack, unusual logins, processes spawning suspicious children, mass file encryption, and flags or stops it. Managed EDR means a team configures it, monitors it around the clock, investigates alerts, and responds, so you get the outcome rather than another dashboard to watch. We pair ThreatLocker with Microsoft Defender for Business to cover both allowlisting and behavioral detection.
Why this matters for cyber insurance
Most cyber insurers now require EDR with monitoring on every endpoint and server, not just antivirus. It is one of the controls, alongside MFA and tested backups, that decides whether you get coverage and at what price. EDR also fits a Zero Trust approach, where no device or process is trusted by default and everything is verified.
How bdManagedIT delivers it
As a ThreatLocker Gold Partner, we run a Zero Trust model that only lets approved applications execute, backed by 24/7 monitoring and Microsoft Defender across your Windows and Mac fleet. It is built into managed IT, so the same team that runs your systems also secures every device. See our managed EDR and endpoint security page, or run the free security self-assessment to find your weak spots.
Frequently asked questions
- What is the difference between EDR and antivirus?
- Antivirus blocks files it recognizes as malicious. EDR watches how software and users behave, so it can catch ransomware, credential theft, and attacker movement that has no known signature, then isolate the device before damage spreads.
- What does managed EDR include that I do not get from a tool?
- Managed EDR adds the people. We configure the tool, monitor it 24/7, investigate alerts, and respond by isolating and remediating compromised devices, so you get the security outcome rather than another alert feed to watch yourself.
- Do I still need antivirus if I have EDR?
- Modern EDR platforms include next-generation antivirus, so you are not running two products. The point is that behavior-based detection and response sits on top of signature scanning, covering the attacks that signatures miss.
- Does cyber insurance require EDR?
- Increasingly, yes. Most carriers now expect endpoint detection and response with monitoring on every device and server. Antivirus alone is often not enough to bind or renew a policy.
- What is ThreatLocker and why do you use it?
- ThreatLocker is a Zero Trust endpoint platform that only lets approved applications run. As a ThreatLocker Gold Partner, we use it to block unknown and unauthorized software by default, with its 24/7 team for monitoring and response.
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