Who Owns Security in a 20-Person Company?

Most 20-person companies don’t have a Chief Information Security Officer (CISO). But here’s the truth: cybersecurity can’t wait until you “grow up.”

The good news? You don’t need a CISO to get started. Security is a shared responsibility — and small teams can distribute it without adding headcount.

Why ownership matters

When “nobody owns it,” security slips between the cracks:

  • Expired domains go unnoticed.
  • Old accounts stay active.
  • Backups never get tested.
  • Incidents get swept under the rug.

Ownership doesn’t mean hiring a specialist — it means making security someone’s job, even part-time.

How to share responsibility in a small team

1. Leadership sets the tone

  • The CEO doesn’t run day-to-day security, but must make it a priority.
  • A single line — “we protect client data as seriously as revenue” — changes culture.

2. IT or admin = first line

  • Whoever manages laptops, email, or cloud services also tracks updates, backups, and access rights.
  • This person doesn’t need to be a security expert — just consistent.

3. Every employee = daily habits

  • Strong passwords, MFA, reporting phishing — these aren’t “IT tasks,” they’re team habits.
  • Make it clear: everyone is responsible for protecting the company.

4. External partners = expertise on demand

  • Use a managed security provider, part-time consultant, or scanning service.
  • They bring expertise without requiring a full-time hire.

A simple ownership model for 20-person teams

  • CEO / Founder → sets expectations, approves budget.
  • Ops / IT person → handles accounts, devices, and backups.
  • Team leads → remind staff, review risks in their area.
  • All staff → follow simple rules (MFA, reporting, careful with data).
  • External partner → provides scanning, monitoring, or incident response expertise.

Final thought

Security in a 20-person company isn’t about titles.
It’s about clear ownership — who does what, even if it’s part of another role.

When responsibility is shared and visible, small companies can be just as safe as bigger ones — without needing a CISO on the payroll.