A microbusiness is a very small company, often run by one person or a handful of staff, with a tight budget and little operational slack. In practice, that means one outage, one missed invoice, or one compromised account can have an outsized effect on the whole operation.
In cyber security, microbusinesses matter because attackers often target organizations that have valuable data but limited defenses. Common risks include phishing, weak passwords, reused credentials, unpatched devices, and insecure third-party services. Defenders in microbusinesses usually need simple controls that reduce workload: multi-factor authentication, automatic updates, backups, least-privilege access, and clear account recovery procedures. The key challenge is not just technical protection, but fitting security into a business that cannot afford much downtime or extra complexity.