Security migration

From

McAfee / Trellix

→

CrowdStrike Falcon

McAfee to CrowdStrike migration — UK endpoint security refresh

McAfee (now Trellix) is a legacy signature-based AV at heart — increasingly outclassed by modern EDR platforms across detection, response and operational simplicity. CrowdStrike Falcon is the most-evaluated destination — cloud-native, single lightweight agent, best-in-class MITRE ATT&CK coverage, optional Falcon Complete for 24×7 MDR. Servnet runs end-to-end McAfee → CrowdStrike migrations including co-existence wave, mass rollout and McAfee uninstall.

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Vendor migration programme — McAfee / Trellix source on the left, CrowdStrike Falcon target on the right, with parallel-running data streams converging through a central Servnet cutover hub.

From → To: McAfee / Trellix vs CrowdStrike Falcon

Typical outcomes

What good looks like after a McAfee / Trellix → CrowdStrike Falcon migration

Detection uplift

×4-6

Typical detection-coverage uplift on MITRE ATT&CK evaluations vs signature-based AV.

Migration window

6-10 wk

End-to-end for a 500-5,000 endpoint estate.

Endpoint footprint

−80%

CrowdStrike agent ~40MB RAM vs McAfee ENS + add-ons ~200MB+.

Infrastructure removed

3-5 VMs

ePolicy Orchestrator + SQL backend + content distribution VMs all decommissioned.

The why

Why UK organisations migrate from McAfee / Trellix to CrowdStrike Falcon

✓Move from signature-based AV to behavioural EDR — catches modern threats AV misses
✓Best-in-class MITRE ATT&CK coverage (consistently top-ranked in evaluations)
✓Single cloud-native agent vs McAfee's on-prem ePolicy Orchestrator + multiple modules
✓Optional Falcon Complete for 24×7 MDR — replaces internal SOC headcount need
✓Frees up significant infrastructure (ePolicy Orchestrator servers, SQL backend)
✓Cyber-insurance + Cyber Essentials Plus alignment — modern EDR meets renewal requirements

How we run it

Migration phasing — typical McAfee / Trellix → CrowdStrike Falcon programme

McAfee / Trellix → CrowdStrike Falcon — programme timeline

1
Discovery + sizing
Week 1
Endpoint estate fingerprint; CrowdStrike licensing sizing (Pro, Enterprise, Elite); Falcon Complete (MDR) sizing if applicable; AD / Entra ID / SIEM integration design.
2
CrowdStrike tenant setup
Week 2
Falcon tenant configured; policies (Pro, Enterprise, IT Hygiene, Spotlight) configured; sensor packages staged; AD / Entra ID + SIEM + ITSM integration.
3
Pilot ring (5% of estate)
Weeks 3-4
Pilot endpoints get CrowdStrike co-existing with McAfee; performance + functional validation; helpdesk training; communications package finalised.
4
Co-existence mass rollout
Weeks 5-7
Phased rollout (typically 20-25% of estate per week) with both agents running; helpdesk monitors tickets per wave; rollback option preserved if any issue.
5
McAfee uninstall + decommission
Weeks 8-10
McAfee removed per-wave; ePolicy Orchestrator + SQL backend + content distribution decommissioned; Falcon operational handover.

Included in scope

What Servnet delivers in a McAfee / Trellix → CrowdStrike Falcon migration

CrowdStrike tenant + sensor packaging

Pre-staged sensors via Intune / SCCM / Group Policy / Jamf — single-click deploy.

AD / Entra ID + SIEM integration

Role-based access, MFA-enforced admin, real-time alert forwarding into your SIEM (Sentinel, Splunk, etc.).

Co-existence wave plan

Detailed rollout wave plan with helpdesk impact mitigation, rollback triggers, daily review.

Policy templates per workload class

Workstation, Server, Tier-0 (Domain Controllers, vCenter), Mac, Linux — tuned policies per class.

McAfee removal tooling

Validated McAfee removal scripts deployed via your endpoint management tool; manual remediation for edge cases.

Post-migration support

90-day hypercare; optional ongoing managed CrowdStrike service or Falcon Complete handover.

De-risking the cutover

Top risks + how we mitigate them

⚠️ Two agents running concurrently degrade endpoint performance

CrowdStrike + McAfee co-existence is well-documented and resource-light. We monitor pilot ring for any performance regression and exclude shared paths (e.g. swap file, hypervisor specific files) where needed.

⚠️ Helpdesk overwhelmed during rollout

Wave size scaled to helpdesk capacity (typically 200-500 endpoints per day); detailed runbooks; daily reviews of ticket volume; ability to pause rollout at any wave boundary.

⚠️ McAfee uninstall fails on some endpoints

Validated McAfee removal scripts handle 95%+ of endpoints cleanly; edge cases get manual remediation. We track McAfee residual presence per endpoint until 100% clean.

⚠️ CISO needs immediate proof of value

CrowdStrike's Spotlight (vulnerability discovery), IT Hygiene (rogue device discovery), and threat hunting deliver visible value in week 1 — useful for the executive narrative before full rollout completes.

Pricing guide rail

Indicative: McAfee → CrowdStrike migrations for a 500-5,000 endpoint estate typically run £12k-£35k professional services (excluding CrowdStrike licensing). CrowdStrike licensing typically £60-£110 per endpoint per year depending on tier. Total programme often cost-neutral or favourable vs McAfee renewal when ePolicy Orchestrator infrastructure decommission savings are factored in. Talk to us for a sized commercial proposal.

Frequently asked

FAQs — McAfee / Trellix → CrowdStrike Falcon

Should we go CrowdStrike or SentinelOne?

Both are excellent. CrowdStrike Falcon Complete is best-in-class for full MDR; SentinelOne Singularity is best for autonomous response (kill / quarantine without human intervention) and is often more cost-competitive. Our EDR choice framework covers the trade-offs.

What about Microsoft Defender for Endpoint?

If you're already on M365 E5, Defender for Endpoint is included — meaningful cost saving. The capability is competitive with CrowdStrike + SentinelOne for most enterprises. See our Defender migration page for the broader Microsoft posture.

Can we get McAfee + CrowdStrike co-existence working cleanly?

Yes — well-documented co-existence with appropriate exclusions. We've done this migration many times; the pilot ring catches any issues before the mass rollout.

What about Macs and Linux?

CrowdStrike has the strongest cross-platform agent in the market — feature parity across Windows, Mac, Linux. Most McAfee Mac / Linux deployments migrate cleanly in the same wave plan.

Go deeper

📖 Legacy AV → EDR playbook →CrowdStrike Falcon →Endpoint security services →Managed Detection + Response →

Ready to scope your McAfee / Trellix → CrowdStrike Falcon migration?

30-minute discovery call with an engineer who's run this migration before. Honest scoping, no sales script.

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💷 Spread the cost · IT finance

Finance the hardware behind your McAfee / Trellix → CrowdStrike Falcon migration

Spread the cost of the target CrowdStrike Falcon platform, servers and storage across a lease or hire-purchase term instead of a single capital outlay — keep the migration moving without a big up-front bill. Indicative terms; subject to status.

See IT finance options →

Indicative estimate · subject to change · no credit check at this stage · hire purchase, lease & subscription for UK businesses

Indicative illustration only. Servnet Limited is not authorised or regulated by the FCA and does not provide financial advice or arrange finance. All finance opportunities are referred to Number Eight Business Finance. Finance policy