A nonemployer business is a firm with no paid employees, usually operated by one owner or a small group of owners. In cyber security, this matters because the same person often handles sales, finance, IT, and security. That concentration reduces separation of duties and can leave one account, one laptop, or one cloud tenant carrying most of the business risk. A phishing email, weak password, or stolen session token can therefore have outsized impact.
These firms often rely heavily on SaaS tools, managed services, and AI workflows, so defenses should be simple but strict: multi-factor authentication, least privilege, backups, logging, and careful review of app integrations. Attackers target them because controls are often lightweight, while defenders value them because they can be easier to standardize and automate. In practice, a nonemployer business succeeds when it treats security as core infrastructure, not an optional extra.