Is Microsoft Defender for Endpoint good enough on its own?

Defender for Endpoint is a strong platform, and the real question is not whether it beats a competitor but whether anyone has configured the policies, reviewed the exclusions, and confirmed it is running everywhere. Unconfigured Defender and unconfigured SentinelOne fail the same way.

Does cyber insurance require EDR?

Increasingly yes, and the application usually asks two separate things. Whether you have it, and whether it is deployed across endpoints and servers with monitoring behind it. The second question is where applications get flagged, because many companies can answer yes to the first and cannot produce evidence for the second.

Will an EDR agent slow down our machines?

Rarely, and when it does it is almost always a policy or exclusion problem rather than the agent itself. Modern agents are light. Slowdown complaints usually trace to an untuned policy scanning something it should not, which is a short fix once somebody looks at it.

Do you cover Macs and Linux servers?

Mac coverage is standard across the platforms we work with. Linux server coverage depends on the distribution and kernel version, and on older builds the honest answer is no agent, isolate the box on the network instead, and document why. Those get flagged during inventory rather than after.

How fast can you be fully deployed?

20 business days is a normal pace for a 150-endpoint environment, assuming server maintenance windows get approved on schedule. Tuning runs another 3 to 4 weeks after that. A quote promising full deployment in a week either is not touching your servers or is not tuning anything.

EDR Services That Actually Cover Every Endpoint

Deployed on every workstation and server, tuned to your applications, and reported monthly with a coverage number you can hand to an underwriter.

EDR services deploy, tune, and manage endpoint detection and response software across every workstation and server a company owns. Consilien runs the rollout, reviews the exclusion list, triages the alerts, and reports coverage every month. The work gets measured in percentage of endpoints reporting, not in licenses sold. Companies running 20 to 500 users are the fit.

Your EDR is probably running on fewer machines than you think

Buy the licenses. Push the agent. Move to the next project.

Then somebody counts. A 140-person distributor licenses 160 seats, installs during onboarding week, and eighteen months later the number of endpoints actually reporting is 118. The rest drifted off. Two file servers got skipped because a maintenance window never got approved, nine laptops belong to people who do not work there anymore, four machines on the warehouse floor run an operating system the agent quietly stopped supporting, and a couple of remote users turned the thing off when a video call stuttered.

None of that shows up on the invoice.

It shows up during an incident. Microsoft's Digital Defense Report 2025 puts 80 to 90% of successful ransomware attacks as starting on a device nobody was managing. Not a device with weak detection. An unmanaged one. The agent was never there, or it was there and stopped checking in, and no report existed to say so.

Three questions come up at this point, every time.

How many endpoints are reporting right now, today?

Are the servers covered, or just the laptops?

If your carrier asked for a deployment report tomorrow morning, could you produce one?

Companies can usually answer the first within about 20%. Almost nobody can answer the third. That gap is what an EDR service is for, and it is why we treat the endpoint layer as an operated program rather than a license you renew.

This page covers the endpoint layer on its own. It sits inside Consilien's broader managed cybersecurity program, and it is the layer underneath managed detection and response. If you already know you need someone awake at 3am, start there instead.

What we do to the endpoint layer

Deployment across the whole fleet, servers included

Workstations are the easy part. Servers are where rollouts stall, because installing an agent on a production file server or an ERP host means scheduling a window, and scheduling a window means somebody has to own the risk of a reboot. So it gets deferred. Then deferred again.

We scope servers in from day one and schedule them, because an endpoint program that stops at the laptop line is the one carriers keep declining.

The exclusion list nobody has read since 2023

Exclusions are the quiet one. Somebody adds a folder exclusion for the ERP or MES directory during a slow month-end close, the complaint goes away, and the exclusion stays. Two years on it is still sitting there, undocumented, on the exact directory an attacker would use to stage files.

We pull the full exclusion list on every environment we inherit and make somebody justify each line in writing. Anything that cannot be justified comes out.

That review takes about a day and it is routinely the single highest-value thing that happens in the first month.

Alert triage and tuning

An untuned EDR generates noise until people stop reading it. Tuning means teaching the platform what normal looks like in your environment, which line-of-business applications behave strangely on purpose, and which machines legitimately run scripts at 2am. We work across Microsoft Defender for Endpoint, SentinelOne, and the Datto and ConnectWise stacks, so this is not a rip-and-replace conversation if you already own something reasonable.

Monthly coverage reporting

A number, in writing, every month. Endpoints in scope, endpoints reporting, exceptions and why.

What covered actually means, in numbers

Coverage claims are easy to make and hard to check, so here is the bar we hold ourselves to and the one you should hold any provider to.

95% of in-scope endpoints reporting, with the remaining 5% named individually in writing along with the reason
Every server in scope, not workstations only
Drift reviewed monthly, because a coverage number from January tells you nothing in July
Exclusion list documented and re-approved quarterly
Deployment report produced on request, formatted for a carrier or an auditor

Why 95% and not 100%? Because 100% is a number providers quote and then quietly stop measuring. There is always a machine in a clean room running software from 2014 that cannot take the agent. The honest version names it, isolates it on the network, and writes down why.

The cost of getting this wrong is measurable. Verizon's 2025 Data Breach Investigations Report found that 46% of infostealer-compromised machines holding corporate logins were unmanaged devices, sitting entirely outside endpoint visibility. And Mandiant's M-Trends 2026 put the global median dwell time at 14 days, up from 11 the year before. Two weeks inside your environment before anyone notices.

One thing we see across nearly every environment we take over.

The tool is fine. The tool is usually a good tool.

The problem is that nobody owns the number.

What EDR is, in plain terms

EDR, or endpoint detection and response, is security software that runs on each laptop, desktop, and server and records what is happening on that machine. It watches process behavior instead of matching known virus signatures, which means it can flag an attack it has never seen before and cut the device off from the network while someone investigates.

Antivirus asks whether a file is on a list of known bad files. EDR asks whether the behavior on this machine makes sense.

How the rollout runs

Nothing about this is mysterious, and you should know the dates before you sign anything.

1. Inventory, days 1 to 5

We count what you have. Every domain-joined machine, every server, every laptop that has not checked in for 90 days, every device holding company data that nobody put on a list. This usually pairs with a vulnerability assessment, because the two inventories overlap heavily.

2. Deploy, days 5 to 20

Agents go out in waves, workstations first, then servers in scheduled windows. We deploy against the inventory, not against a seat count, so the gap between the two becomes visible immediately.

3. Tune, days 20 to 45

Exclusion review, policy alignment, and alert threshold work. Your accounting package does something odd every quarter close. We want to know that before it pages someone at midnight.

4. Prove, day 45 onward

Monthly coverage report, quarterly exclusion re-approval, and a deployment report on demand when the insurance renewal comes around.

Want to see what the first 45 days would look like in your environment? Speak to a security expert and we will start with the count, not the quote.

EDR, managed EDR, or MDR

Three different purchases get sold under similar names. Pick by what you already have.

	EDR software only	Managed EDR (this page)	MDR
What you are buying	Licenses and a console	Deployment, tuning, coverage ownership	Round-the-clock human detection and response
Who installs it	You	Us	Us
Who watches the alerts	Your team	Your team, with our triage and tuning	A staffed SOC, 24/7/365
Who responds at 3am	Whoever is awake	Nobody, until business hours	The SOC, immediately
Right when	You have security staff and want control	You own or need the tooling, but nobody owns the coverage number	You need containment overnight, not a ticket in the morning
Typical fit	200+ users with a security team	20 to 500 users, no dedicated security headcount	Regulated, contract-driven, or post-incident

If the third column is the one describing your situation, read the managed detection and response page instead. The two stack cleanly, and plenty of clients run managed EDR underneath a 24/7 SOC. We also broke the categories down without the sales framing in EDR vs MDR vs XDR.

Questions buyers ask before they sign

Nobody signs an endpoint contract without asking these, so we may as well answer them here.

Managed EDR coverage across a laptop and server monitored by a single security agent

What clients say

★★★★★

"Consilien always does a great job managing our varied IT services and they employ some extremely knowledgable and professional support reps. They also keep us up to date on new security issues that develop so we can proactively manage them."

Google review

★★★★★

"Consilien is a quality IT partner that has done a great job keeping our business up and running."

Charles Warren, Financial Analyst, Interactive Health. 14-year client, Clutch 5.0

Independently owned since 2001. The standard agreement runs 3 years with a 1-year opt-out on 60 days notice, which exists because we would rather earn year two than trap you into it.

Common questions about EDR services

How much do EDR services cost?

$4 to $12 per endpoint per month covers the software on most platforms, with servers often carrying a 1.5x to 2.5x multiplier. Management is quoted separately. A 150-endpoint environment with 12 servers lands in a predictable monthly range once the inventory is real, which is part of why step one is counting rather than quoting.

Verizon found ransomware in 48% of breaches last year, and 96% of the victims were small and mid-sized businesses. Nearly all of it starts on an endpoint, often the one that never got an agent.

You can find out which machines those are in about five days. An inventory pass counts what you actually have, what is reporting, and what has been sitting outside coverage long enough to matter.

Speak to a Security Expert

Call 866.680.3388