Definitive Guide

EDR for Small Businesses

Traditional antivirus is dead. Here's why every SMB needs EDR, which solutions to consider, and how it affects your cyber insurance.

FK

Farhad Mirza Khawar

Founder of HIPAA Agent and Cyber Defense Agent. Compliance infrastructure for SMBs. Sacramento, CA.

2026-05-01

Why antivirus is no longer enough

Traditional signature-based antivirus catches known malware — but modern attacks use fileless techniques, living-off-the-land binaries, and zero-day exploits that bypass signature detection entirely. Endpoint Detection and Response (EDR) goes beyond antivirus: - Behavioral analysis detects suspicious activity patterns, not just known signatures - Real-time monitoring watches for indicators of compromise continuously - Automated response can isolate compromised endpoints instantly - Forensic data provides investigation capability after an incident - Managed detection adds human analysts reviewing alerts 24/7 Cyber insurance carriers have shifted from requiring "antivirus" to requiring "EDR or equivalent." This is not a terminology change — it's a fundamental shift in the minimum acceptable endpoint protection.

Choosing an EDR solution

For SMBs, the leading EDR options are: Microsoft Defender for Endpoint — Included with Microsoft 365 Business Premium ($22/user/mo). Best option for Microsoft-centric businesses. Excellent integration, solid detection, carrier-accepted. SentinelOne — Strong autonomous detection. Good for businesses wanting best-in-class protection. Pricing starts around $6-8/endpoint/mo through MSPs. CrowdStrike Falcon Go — Premium EDR with industry-leading detection. More expensive ($8-15/endpoint/mo) but top carrier preference. Huntress — Designed specifically for SMBs and MSPs. Managed detection with human review. Excellent for businesses without security staff. All four are accepted by cyber insurance carriers. Choose based on your existing technology stack, budget, and whether you have IT staff to manage alerts.

EDR and cyber insurance

Most carriers now require EDR as a condition of coverage. During underwriting, carriers typically: 1. Ask which EDR solution you use (brand name required) 2. Verify deployment coverage (all endpoints, not just some) 3. Check for managed detection and response (MDR) capability 4. Confirm automated response policies are enabled Cyber Defense Agent doesn't scan for EDR directly (it's an endpoint control, not an external-facing one), but our framework mapping identifies where EDR fits in your overall compliance posture.

Key Takeaways

TL;DR

Traditional antivirus is insufficient — cyber insurers now require EDR.

Microsoft Defender for Endpoint is a cost-effective option for M365 businesses.

Deploy EDR on ALL endpoints — partial deployment doesn't satisfy carriers.

Consider managed EDR (MDR) if you don't have security staff to review alerts.

Official Sources

FAQ

Frequently asked questions

What is the difference between EDR and antivirus?

Antivirus uses signatures to detect known malware. EDR uses behavioral analysis, machine learning, and continuous monitoring to detect known and unknown threats, including fileless attacks and living-off-the-land techniques. EDR also provides automated response and forensic investigation capabilities.

Do I need EDR on every device?

Yes. Cyber insurers require EDR on all endpoints, including desktops, laptops, and servers. Partial deployment creates gaps that attackers exploit. If a device can access your network or data, it needs EDR.

How much does EDR cost for a small business?

Microsoft Defender for Endpoint is included with Microsoft 365 Business Premium ($22/user/mo, which includes Office apps). Standalone EDR solutions range from $6-15/endpoint/mo. For a 25-person business, expect $1,800-$4,500/yr for EDR.

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