Endpoint detection and response (EDR) is security software that runs on every laptop, desktop, and server in your office, watches for signs of an attack in real time, and can isolate or shut down a compromised device before malware spreads to the rest of your network. For a small business handling client financial records, patient data, or anything attackers could resell, EDR catches what antivirus misses: the attacker who gets past your spam filter, steals a password, and starts moving through your systems by hand instead of with recognizable malware.
You do not need an in-house security team to run EDR. Most small businesses buy it as a managed service, where a vendor's security analysts watch the alerts around the clock and respond on your behalf, rather than software your own staff has to monitor.
Quick Answer
Endpoint detection and response (EDR) is security software that continuously monitors every computer and server for malicious behavior and can isolate an infected device automatically. For a small business, EDR works best as a managed service rather than a self-monitored license, because someone has to watch the alerts and act when one fires. Managed EDR plans for small business typically run in the range of $15 to $45 per device per month in 2026, depending on whether 24/7 monitoring, ransomware recovery, and compliance reporting are included. A bare software license without monitoring is not scope-equivalent to a managed plan, even if its sticker price is lower.
How EDR Differs From Traditional Antivirus
Traditional antivirus compares files against a list of known malware signatures and blocks what it recognizes. Attackers routinely get around this by using tools your operating system already trusts, such as PowerShell, or by buying stolen login credentials instead of writing new malware. Verizon's 2024 Data Breach Investigations Report found that stolen credentials and social engineering factored into the majority of breaches it analyzed, exactly the kind of attack signature-only antivirus is not built to catch. See the full report from Verizon's DBIR.
EDR watches behavior instead of just file signatures. If a process tries to disable backups, encrypt files in bulk, or reach an administrator share it has no reason to touch, EDR can kill that process or isolate the device before damage spreads. If you're comparing related termsEDR vs MDR vs XDR explains how managed detection and response (MDR) adds the human analyst team, and extended detection and response (XDR) adds correlation across email, cloud, and network data on top of the endpoint. For background on the attack types EDR is designed to stop, see types of malware and how they spread.
What Managed EDR Costs for a Small Business in 2026
Pricing is almost always quoted per device per month, and the number you see depends on what's bundled in. A bare software license with no monitoring can list for less, but someone on your staff still has to triage every alert, which most offices of five to fifty people cannot do reliably alongside their regular job. A managed plan, where the vendor's team watches alerts around the clock and takes action, costs more per device but removes that staffing problem.
Bellator Cyber Guard's own pricing illustrates the range: Bellator Shield is managed EDR at $19 per computer per month, and Bellator Core adds remote monitoring and Ransomware Rollback® for $33 per computer per month. If you're comparing several providersEDR pricing and total cost of ownership and which EDR providers offer flat monthly pricing for SMBs walk through what pushes the per-device number up or down. A side-by-side on managed detection services is in the pricing comparison across MDR vendors.
Where EDR Fits Into Compliance
The FTC Safeguards Rule, which applies to tax preparers, accountants, and other non-banking financial institutions, requires covered firms to monitor their systems and either run continuous monitoring or periodic penetration testing and vulnerability scans under 16 CFR 314.4(c)(8). Read the rule directly at the FTC's Safeguards Rule guidance. EDR with 24/7 monitoring can support that monitoring expectation, but it does not replace a written information security plan (WISP) or a qualified individual's sign-off. Confirm your firm's specific obligations with your compliance advisor or counsel.
What to Ask a Vendor Before You Buy
- Confirm the plan includes 24/7 monitoring, not just software you have to watch yourself
- Ask what the provider's typical response time is from alert to containment
- Check whether ransomware recovery or rollback is included or billed separately
- Get compliance reporting in writing if you're subject to the FTC Safeguards Rule or HIPAA Security Rule
- Ask exactly what counts as an endpoint: servers, laptops, and mobile devices can be priced differently
- Get the per-device price and contract minimum in writing before you sign
Advantages
- Catches behavior-based attacks that bypass signature-only antivirus
- Can isolate an infected device automatically, limiting spread while someone responds
- Managed plans add 24/7 human review without hiring in-house security staff
- Generates logs and reports that support compliance documentation
Considerations
- Software-only licenses still require someone to monitor and act on alerts
- Pricing varies enough between providers that you need to compare scope, not just the headline number
- Deploying EDR does not replace backups, employee training, or a written security plan
- No tool eliminates breach risk entirely; EDR reduces dwell time, it does not guarantee prevention
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Frequently Asked Questions
No. Antivirus mainly blocks known malware by signature, while EDR monitors behavior across your devices and can isolate one mid-attack, even if the specific malware has never been seen before. Most modern EDR platforms include antivirus-style protection as one layer inside a larger behavioral monitoring system.
Built-in tools provide baseline antivirus protection, but on their own they generally lack the 24/7 human monitoring and automated containment that managed EDR adds. For a business handling client financial or health data, pairing endpoint protection with monitored detection and response closes a gap that signature-based tools leave open.
Pricing is usually quoted per device per month. As one reference point, Bellator Shield prices managed EDR at $19 per computer per month, and Bellator Core adds remote monitoring and ransomware rollback at $33 per computer per month. Confirm what's included, monitoring hours, response time, and reporting, before comparing any quote to those figures.
No single tool satisfies a compliance rule by itself. EDR can support the monitoring and access control expectations in the FTC Safeguards Rule and the HIPAA Security Rule, but you still need a written information security plan, a risk assessment, and the other administrative and physical safeguards those rules require. Legal questions about what your firm specifically needs belong with your compliance advisor or counsel.
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