CrowdStrike vs SentinelOne for Software Development Shops
A custom software agency should pick an EDR that proves every laptop touching client code is monitored, contractors' machines included. Client security questionnaires increasingly ask what endpoint protection your team runs, and the answer must hold up whether the engineer is a full time hire or a contractor on a six week sprint working across several clients' repositories.
Neither CrowdStrike nor SentinelOne solves the contractor problem by itself. What they give you is the evidence layer: proof that a laptop touching multiple clients' code is monitored, that access was not standing on an unmanaged device, and that if something did go wrong, you would know within minutes rather than find out from the client.
Vendors Covered in this Article
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How should a dev shop handle contractors bringing their own devices?
Agencies run leaner than product companies and lean harder on contractors, and contractors do not always want a company issued laptop for a short engagement. That is a real tension: requiring a managed device for every contract slows down onboarding, but letting someone use a personal laptop with client credentials on it means you cannot show a client what is actually running on the machine that has their code. Most agencies land somewhere in the middle: company issued laptops for anyone with more than a few weeks on the books, and a lighter agreement, like a mobile device management profile with the EDR agent required, for shorter engagements.
A worked example: onboarding a contractor onto three client codebases
Say you bring on a backend contractor for a twelve week engagement split across three clients. Before their first commit, the laptop needs the EDR agent installed and reporting into your console, the client's own access provisioned with time limited credentials rather than a standing account, and a note in your access log tying that laptop's endpoint ID to the specific client repositories it can reach. If the contractor's laptop later shows suspicious process behavior, you want to answer three questions immediately: which client's code was on that machine, what credentials it held, and whether anything left the device. Both CrowdStrike and SentinelOne give you the detection and the process history to answer the first and third question. Your own access log has to answer the second.
Steps to complete before a contractor's first commit:
- Install the EDR agent on the contractor's laptop and confirm it reports into your console before any client access is granted.
- Provision the client's own access with time limited credentials rather than a standing account.
- Record in your access log which laptop endpoint ID is tied to which client repository and engagement.
- Repeat the same checks for each additional client the contractor will work on during the engagement.
What CrowdStrike adds when a client review calls for managed response
Some client security reviews, particularly from larger enterprise clients or anyone in a regulated industry, ask not just what EDR you run but who is watching it. CrowdStrike's Falcon Complete managed detection service answers that directly: a named team monitors your fleet and responds to incidents, which is a stronger answer to give a client's security team than an internal engineer checking the console when they have time. If landing bigger clients depends partly on passing their vendor security review, that managed response story can be worth the added cost on its own.
What SentinelOne adds when your fleet is small and self managed
A smaller agency without the volume to justify a managed detection contract benefits more from SentinelOne's autonomous, on agent response: the platform can isolate a compromised laptop and roll back file changes from a ransomware attempt without waiting on a human to act first. That matters most for a team where nobody is dedicated to watching a security console, since the agent does more of the immediate containment on its own before an alert even reaches a person.
Turning your EDR evidence into a client attestation
Whichever platform you pick, build a one page summary you can hand a prospective client's security reviewer: what is deployed, on how many endpoints, how quickly an alert gets triaged, and who is responsible for that triage. Pull the actual numbers from your console rather than describing the platform's marketing capabilities, since a security reviewer wants your operational reality, not the vendor's feature list.
What happens when a contractor's engagement ends
Offboarding matters as much as onboarding in this line of work, and it is the step agencies most often skip under deadline pressure. When a contractor's engagement ends, revoke their access to every client repository they touched, confirm the EDR agent still reports correctly on the laptop if it is being reassigned to a new project, and if the laptop was personally owned, remove the mobile device management profile and any client credentials rather than assuming the contractor will delete them. Keep a record of exactly when access was revoked for each client, since a client's own security team may ask for that timeline months later if anything is ever traced back to that engagement window.
Build offboarding into the same checklist you use for onboarding rather than treating it as a separate, lower priority task. An agency that can show a clean, timestamped offboarding record for every past contractor is answering a question most competitors cannot, and it is often the detail that reassures a cautious client's security reviewer more than the specific EDR vendor named on the form.
What Good Looks Like
A software development agency with mature endpoint security can name, for every laptop touching client code, which clients it has access to, what security agent is running on it, and how quickly an alert on that machine would reach a person, regardless of whether the laptop belongs to a full time engineer or a short term contractor.
Building The Capability (5-Stage Skill Ladder)
How to Get Started
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Consider CrowdStrike when landing larger or regulated clients depends on being able to point to a named, staffed detection and response team rather than a self monitored console.
Consider SentinelOne when your team is small, nobody is dedicated to watching a security console, and you want the agent to contain a compromised laptop on its own.
Frequently Asked Questions
Do contractors need the same EDR agent as full time employees?
Any laptop that touches client code or credentials should run the same agent and policy as a full time employee's machine, regardless of employment status. The risk comes from what is on the device, not who is employed there, so a short engagement does not justify a lighter security posture.
What should we tell a client who asks what endpoint security we run?
Give them specifics: the platform, how many endpoints it covers, your alert response time and who is responsible for triage. A vague answer like enterprise antivirus invites more questions than it answers, while concrete operational details usually satisfy a vendor security review.
Is a managed detection service worth it for a small agency?
It depends on your client mix. If landing larger or regulated clients depends on passing their security reviews, a managed detection service gives you a stronger answer than a self monitored console. If your clients do not ask, a smaller agency can often get by with autonomous, self contained response instead.
How do we handle a contractor's personal laptop if they will not take a company issued one?
Require a mobile device management profile with the EDR agent installed as a condition of access, even on a personal device, and time limit their credentials to the engagement length. If a contractor will not accept that condition, that is a sign to reconsider whether they should have direct access to client code at all.
About the numbers
This guide doesn't quote a sourced benchmark. Figures in it are estimates or general guidance, so check them against your own numbers.
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