What EDR, XDR and MDR provide
| Term | What it is | Who operates it |
|---|---|---|
| EPP (antivirus) | Blocks known-bad files and behaviors | Runs itself |
| EDR | Records endpoint activity, detects suspicious behavior, enables investigation and response | Your team; it needs analysts |
| XDR | EDR extended across email, identity, cloud and network telemetry | You, with more data to correlate |
| MDR | EDR or XDR plus a vendor security operations team watching it around the clock | The vendor |
The last column often decides the purchase. EDR is an investigation and response tool that assumes a trained analyst will review its output. In many organizations with fewer than a few hundred staff, nobody is assigned to triage alerts at 2am on a Sunday. In that setting, EDR alone may record a breach without prompting a timely response.
MDR is often the practical fit for a mid-sized business without round-the-clock analysts. It costs more per endpoint than EDR alone, but much less than staffing a 24/7 security operations center.
Why antivirus is no longer sufficient on its own
Signature detection recognizes known-bad files. It cannot cover attacks that use no malicious file at all, including these common patterns:
- Living off the land. Attackers use PowerShell, WMI, PsExec and other legitimate administrative tools already present on the system. There is no signature for
powershell.exe. - Valid credentials. Access bought from an initial-access broker or phished produces logins that look entirely normal.
- Fileless execution. Payloads run in memory and never touch disk.
- Legitimate remote tools. AnyDesk, ScreenConnect and TeamViewer are used by attackers precisely because they are also used by IT departments.
Behavioral detection can flag a Word document spawning PowerShell and contacting an unfamiliar host, or a service account suddenly enumerating the domain. EDR is built to record and investigate those sequences; traditional antivirus is not.
How to evaluate detection quality
Vendor detection rates are difficult to compare without a common method. Use three sources of evidence:
- MITRE ATT&CK Evaluations. MITRE emulates real adversary groups against each product and publishes raw results without ranking vendors. Look at detection coverage (how many steps were seen), analytic quality (whether the result was raw telemetry or a named technique), and the number of configuration changes or delayed detections. A quoted "100% detection" figure may include raw telemetry, which shows that data existed but not necessarily that an analyst received a useful alert.
- AV-Comparatives and SE Labs. Independent, methodologically transparent, and they publish false-positive rates alongside detection rates. A high detection score has limited value if false positives regularly block business software.
- Your own proof of concept. Run two products in parallel on a representative part of your estate for 30 days. Count the alerts and assess whether your team can work through them.
The platforms
The entries are grouped by buyer fit. Pricing is indicative list pricing as of August 2026; endpoint security is heavily discounted at volume, so use these figures as reference points rather than quotes.
CrowdStrike Falcon
Best-regarded platform for larger organizations
A lightweight single-agent platform with strong results across independent evaluations and an extensive threat-intelligence operation.
Falcon has performed strongly across successive MITRE evaluations. Its threat intelligence tracks named adversary groups and their tradecraft, then feeds that context into detections. The single-agent, cloud-native architecture also keeps endpoint overhead low, an operational concern when deploying to everyday laptops.
The price reflects that positioning, and the modular structure places capabilities in separate SKUs. Quote the specific modules you need. The July 2024 update incident caused widespread Windows outages; ask what changed afterward in staged rollout and make sure you control your own deployment rings.
Strengths
- Consistently strong independent evaluation results
- Lightweight agent with low endpoint impact
- Detailed threat intelligence and adversary attribution
- Falcon Complete is a well-regarded MDR option
Trade-offs
- Among the more expensive options
- Modular licensing means the total is higher than the headline
- Full value requires analysts who know how to use it
SentinelOne Singularity
Strongest autonomous response
On-agent behavioral detection and response that continues without cloud connectivity, including automated rollback of ransomware encryption.
Detection logic runs on the endpoint rather than depending entirely on the cloud, so protection continues when a laptop is offline. Its one-click rollback can reverse ransomware encryption on Windows and is straightforward to examine in a proof of concept.
Automated response also creates operational risk: an aggressive policy can quarantine a business-critical process. Tune the response actions during the trial and document which ones can run without approval.
Strengths
- Works fully offline, which helps with field and disconnected devices
- Ransomware rollback can be demonstrated during a trial
- Strong independent evaluation results
- Vigilance MDR available as an add-on
Trade-offs
- Automated remediation needs careful tuning to avoid self-inflicted outages
- Console can feel dense for smaller teams
- Premium pricing, with capability tiered across SKUs
Microsoft Defender for Endpoint
Best value if you already have Microsoft E5
Competitive detection with close Windows and Entra ID integration, bundled for organizations that already hold the relevant Microsoft E5 license.
Defender has improved substantially and now performs respectably in independent testing. Its structural advantage is telemetry from Windows, correlated with identity, email and cloud data across a Microsoft estate. For an organization already paying for E5, the marginal license cost is effectively zero.
Defender for Business offers much of this to organizations under 300 seats at a low per-user price. The trade-offs are coverage and concentration: the product is strongest on Windows, and placing the security stack inside one vendor ecosystem carries its own strategic risk.
Strengths
- Effectively free with Microsoft 365 E5
- Deep Windows and Entra ID integration
- Defender for Business is priced for SMBs
- Correlates endpoint, identity and email signals natively
Trade-offs
- Strongest on Windows; non-Microsoft platforms are less mature
- Ties your security posture to one vendor
- Licensing is complex; confirm what your SKU includes
Sophos Intercept X with MDR
Best MDR for small and mid-sized businesses
Strong protection paired with an accessible managed detection and response service, aimed squarely at organizations with no internal security team.
Sophos targets the mid-market with a relatively clear console, straightforward deployment and an MDR service priced within reach of a 200-person company. That combination matters for organizations that cannot staff EDR monitoring themselves.
The platform can also use Sophos firewalls to isolate a compromised host at the network layer. This is useful for organizations already running that networking stack and less relevant elsewhere.
Strengths
- MDR priced for organizations without a security team
- Clear, approachable management console
- Synchronised Security with Sophos firewalls
- Strong partner channel for SMBs
Trade-offs
- Less depth than CrowdStrike or SentinelOne for mature security teams
- Best value depends on adopting more of the Sophos stack
Huntress
Best for very small teams and MSPs
Deliberately narrow: human-verified detection of persistence and footholds, with every alert reviewed by an analyst before it reaches you.
Huntress takes a narrower approach than the full EDR platforms: it looks for footholds and persistence, and an analyst validates each alert before sending it. The resulting alert volume is lower, which makes the service more manageable for a small team.
It is not a full EDR platform. Huntress is often deployed alongside Defender rather than replacing it, creating a lower-cost option for a small organization that wants human-reviewed detection.
Strengths
- Every alert is reviewed by a human, reducing the false-positive burden
- Pricing is accessible to small organizations
- Excellent MSP tooling and multi-tenancy
- Complements rather than replaces existing antivirus
Trade-offs
- Narrower scope than a full EDR or XDR platform
- Limited investigation tooling for mature security teams
- Usually needs pairing with another endpoint product
Comparison at a glance
| Platform | Best for | MDR available | Indicative annual cost per endpoint |
|---|---|---|---|
| CrowdStrike Falcon | Mid-market to enterprise | Falcon Complete | $60–$185+ |
| SentinelOne | Automated response, offline endpoints | Vigilance | $70–$200 |
| Microsoft Defender | Microsoft-centric estates | Defender Experts | Bundled with E5, or ~$36 |
| Sophos Intercept X | SMBs without security staff | Sophos MDR | Mid-range |
| Huntress | Very small teams and MSPs | Included | Low |
Indicative list pricing as of August 2026. Endpoint security is heavily discounted by volume and contract term, so obtain a current quote.
What matters more than the product choice
- Coverage. An unprotected endpoint can become the initial foothold. Reconcile agent inventory against asset inventory monthly, including contractors’ machines, where coverage gaps commonly appear.
- Someone watching. If nobody in your organization is paid to triage alerts overnight, MDR is usually a better fit than unmanaged EDR. This decision matters more than a marginal difference between detection engines.
- Tuning. Each environment produces benign behavior that looks suspicious. Reserve time in the first 60 days to suppress it before alert fatigue erodes monitoring.
- An incident response plan. Detection only establishes that something may be wrong. Document who is called, who can isolate a host, and who communicates with customers and regulators, then rehearse that plan.
- The rest of the basics. MFA, patching, least privilege and tested backups remain essential preventive controls. EDR is one layer, not the whole strategy.
Frequently asked questions
What is the difference between antivirus and EDR?
Antivirus blocks known-bad files using signatures and simple heuristics. EDR continuously records endpoint activity and detects suspicious behavior, which catches attacks using legitimate tools and stolen credentials where no malicious file exists. EDR also gives you the forensic timeline needed to understand what happened. Most modern products include both.
Do I need EDR if I have Microsoft Defender?
Defender Antivirus, built into Windows, is antivirus only. Defender for Endpoint and Defender for Business are the EDR products and are separate licenses. If you hold Microsoft 365 E5, Defender for Endpoint is already included and worth enabling before buying anything else.
Should I buy EDR or MDR?
If nobody at your organization is responsible for triaging alerts outside business hours, MDR is usually the better fit. Unmonitored EDR may provide forensic evidence without prompting a timely response. MDR costs more per endpoint and far less than staffing a 24/7 security operations center.
How much does endpoint security cost per user?
Roughly $30–$60 per endpoint per year for standard EDR at volume, $60–$185 for premium tiers, and meaningfully more for MDR. Microsoft Defender for Business is around $3 per user per month for organizations under 300 seats, and Defender for Endpoint is included in Microsoft 365 E5.
Which endpoint security product has the best detection rate?
No single answer holds across all attack types, and vendor-published figures need independent context. MITRE ATT&CK Evaluations, AV-Comparatives and SE Labs publish methodology and results. Follow that desk research with a 30-day proof of concept on your own estate, where false-positive volume matters as much as headline detection.
Can I run two endpoint security products at once?
Two full antivirus engines will conflict and degrade performance. Some combinations are designed to coexist; Huntress alongside Defender is a common and supported pairing. Check vendor documentation before deploying anything else in parallel beyond a controlled trial.