What “good enough” endpoint security looks like for an SMB

Small businesses do not need a security operations center to stop looking like easy prey. They do need a short list of controls that actually get maintained. “Good enough” endpoint security is less about buying every tool and more about closing the holes attackers still walk through.

Microsoft’s current security guidance for small businesses starts with the same kind of fundamentals: MFA, protected admin accounts, managed devices, and threat protection.

The baseline that matters

If you only do five things well, do these:

1. Automatic OS and browser updates on every laptop and desktop you care about
2. MFA on Microsoft 365 / Google Workspace and any remote access
3. A modern EDR / antivirus that you actually look at (Defender for Business, or a reputable alternative), not a free scanner nobody opens. Microsoft positions Defender for Business specifically for organizations with up to 300 users and includes optimized endpoint detection and response.
4. Local admin rights removed for day-to-day work where possible. That follows the least-privilege principle: give users only the access they need for the work they need to do.
5. Backups that restore, including copies a compromised administrator or endpoint cannot erase. Microsoft’s ransomware recovery guidance is explicit that critical systems and data need backups protected against deliberate encryption or deletion.

Everything else is secondary until those are boring and reliable.

What usually gets skipped

• Personal devices with company mail and no PIN/biometrics
• Shared “admin” passwords taped under keyboards (yes, still)
• Servers that only get patched when something breaks
• VPN or RDP exposed to the internet “just for a week”

If your environment has those, fix them before you shop for another dashboard.

A practical weekly rhythm

You do not need a full-time analyst. You need a habit:

• Review EDR / Defender alerts that are not noise; Microsoft’s Defender for Business workflow starts with reviewing threats and at-risk devices, then taking an available response action
• Confirm patch rings did what they said
• Check backup success and a periodic restore test
• Offboard accounts the same week someone leaves

That rhythm prevents the classic SMB failure mode: tools installed once, ignored forever.

When to spend more

Upgrade the stack when:

• You handle sensitive regulated data
• You have more devices than you can see in one console
• Remote staff are a permanent majority
• Insurance or a customer contract requires specific controls

Until then, consistency beats complexity.

Bottom line

Good enough endpoint security for an SMB is patched devices, MFA, monitored EDR, least privilege, and backups you have restored on purpose. Fancy platforms help later; they do not replace those basics.