TL;DR

Most breaches start at the endpoint — a laptop, phone, or unmanaged desktop with weak defences. This checklist gives business owners a practical, this-week action plan for hardening every device: deploy EDR/XDR, automate patching, roll out MDM, and apply OS-level baselines mapped to the ASD Essential Eight and CIS Benchmarks. Expect to spend roughly $3–$15 per endpoint per month for a defensible baseline.

Why endpoints are your biggest risk

Every device that touches your email, cloud apps, or VPN is a potential foothold for an attacker. For Australian SMBs, the ACSC's Essential Eight priorities three controls that live squarely on endpoints: patch applications, patch operating systems, and user application hardening. CIS Benchmarks add the configuration detail — exactly which settings to change on Windows, macOS, iOS, and Android. Together they give you a clear standard to hit, not just a vague "be secure" mandate.

The good news: modern tools make this achievable in days, not months, even without a dedicated security team.

EDR/XDR deployment: detect and respond fast

EDR (Endpoint Detection and Response) records endpoint activity, flags suspicious behaviour, and lets you isolate compromised machines. XDR extends that view across email, identity, cloud, and network signals. For SMBs, the goal is coverage first — every managed laptop, desktop, and server.

Tools to consider:

  • Microsoft Defender for Endpoint — included with Microsoft 365 Business Premium or Enterprise E5; excellent for Windows-heavy shops already using Entra ID and Intune.
  • CrowdStrike Falcon Go — lightweight cloud-native agent, strong threat intel, designed for smaller teams.
  • SentinelOne Singularity — autonomous rollback, ransomware remediation, and straightforward pricing.

Cost estimate: $3–$15 per endpoint per month depending on tier, managed service overlay, and contract length. Start with a pilot group of 5–10 devices, tune false positives for one week, then deploy fleet-wide. Make sure the agent is tamper-protected and that someone — internal or outsourced — monitors alerts daily.

Patch management: close the holes attackers use first

Unpatched operating systems and apps are still the leading infection vector for SMBs. Manual patching does not scale; you need automation with testing and rollback.

Recommended tools:

  • Microsoft Intune / Windows Update for Business — free with Microsoft 365, supports ringed deployment and compliance reporting.
  • Automox — cross-platform patching for Windows, macOS, and Linux with policy-based automation.
  • PDQ Deploy — fast, agentless Windows patching and software deployment for on-prem networks.

This-week action plan:

  1. Inventory every device and its current OS/app version.
  2. Enable automatic OS updates with a 24–48 hour deferral ring for testing.
  3. Patch browsers, PDF readers, Office suites, and remote-access tools first — these handle untrusted content daily.
  4. Remove or disable unsupported software (end-of-life OS versions, old Java, pirated tools).
  5. Document exceptions; anything that cannot be patched must be isolated or retired.

MDM rollout: control phones, tablets, and remote laptops

Mobile devices and remote laptops often hold company email, Slack, and files but lack the same controls as deskbound PCs. MDM enforces encryption, PIN/biometric locks, remote wipe, and app restrictions.

Tools to consider:

  • Microsoft Intune — strong for Windows + Android + iOS in Microsoft-centric environments.
  • Jamf Pro / Jamf Now — the standard for Apple fleets; Jamf Now is the simpler, lower-cost option for smaller teams.
  • Google Workspace Mobile Management — basic but functional for Android shops already on Workspace.

Minimum MDM policy set:

  • Require screen lock with PIN/biometric (6-digit minimum).
  • Enforce device encryption and disable USB debugging / developer options.
  • Push only approved apps; block sideloading.
  • Enable Find My Device / remote wipe for lost hardware.
  • Separate work and personal profiles where supported (Android Work Profile, Apple Business Manager).

Roll out MDM in waves: executives and IT first, then department by department. Communicate clearly that MDM protects company data, not personal privacy — and publish the policy before enforcement.

OS and application hardening quick-win checklist

Use CIS Benchmarks as your technical target and ASD Essential Eight as your prioritisation lens. Apply these settings this week:

Laptops and desktops

  • Enable BitLocker (Windows) or FileVault (macOS) full-disk encryption.
  • Disable guest accounts and local administrator rights for day-to-day users.
  • Turn on Windows Defender Firewall and require smart-screen / Gatekeeper warnings.
  • Remove unnecessary browser extensions and disable macros by default in Office.
  • Enable tamper protection on antivirus/EDR agents.

Mobile devices

  • Keep OS auto-update enabled; require iOS/Android updates within 14 days of release.
  • Disable jailbroken/rooted device access to company apps via MDM compliance rules.
  • Restrict location, camera, and contact access to business apps only.
  • Use mobile threat defence if staff access sensitive data from personal phones.

Browsers and productivity apps

  • Force password manager use and phishing-resistant MFA (passkeys or hardware keys where possible).
  • Block legacy authentication protocols and unused remote-desktop ports.
  • Audit cloud app OAuth grants monthly; revoke abandoned third-party connections.

FAQ

Do we need EDR if we already have antivirus?

Yes. Traditional antivirus relies on known signatures. EDR monitors behaviour in real time, detects fileless attacks, and gives you isolation and forensic tools. Think of antivirus as a lock; EDR is the alarm system and camera.

Can we use free tools for patch management and MDM?

Partially. Microsoft Intune and Windows Update for Business cover a lot at no extra cost if you already use Microsoft 365. Jamf Now and Google Workspace Mobile Management also have low-cost tiers. However, cross-platform patching, reporting, and dedicated support usually justify the $3–$15 per endpoint monthly spend.

How long should an MDM rollout take?

A focused SMB rollout takes 1–2 weeks: policy design, device enrollment, app deployment, and user communication. Larger or mixed-device fleets may need 4–6 weeks. Always pilot with IT and a friendly department first.

Which devices must be enrolled in MDM?

Any device accessing company email, files, SaaS apps, or internal systems. That includes company-owned laptops, tablets, and phones, plus BYOD phones if they hold business data. Consider a separate, lighter BYOD policy for personal devices.

Conclusion

Endpoint security is not a one-time project — it is a weekly discipline of patching, monitoring, and policy enforcement. Start this week: pick an EDR/XDR tool, turn on automated patching for one ring, and enroll your highest-risk devices in MDM. Use the ASD Essential Eight and CIS Benchmarks as your checklist, not your ceiling.

Need help sizing the right stack for your fleet? Visit consult.lil.business for a free cybersecurity assessment and we'll build an endpoint hardening plan matched to your devices, budget, and compliance needs.

References

  1. Australian Cyber Security Centre — Essential Eight
  2. CIS Benchmarks — CIS Controls and Benchmarks
  3. NIST — Security Requirements for Cryptographic Modules (SP 800-171)

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