Malicious actors are increasingly targeting small and midsize businesses because they hold valuable data such as customer records, financial information, and intellectual property, while often having less mature security programs. According to the 2025 State of SMB Cybersecurity Report from CrowdStrike, top emerging threats include AI-powered attacks (48%), deepfake or social engineering scams (48%), and cloud security risks (37%). Size impacts readiness, with only 47% of businesses under 50 employees having a formal cybersecurity plan compared to 90% of those with 150-249 employees. Traditional castle-and-moat perimeter security fails in remote work and SaaS environments where the new perimeter is identity.
Common SMB network weaknesses include flat networks allowing lateral movement from one compromised device, over-reliance on a single perimeter firewall, inconsistent patching, shared admin rights, lack of multifactor authentication, limited visibility into attacks, and insufficient backups. Lean IT teams often lack bandwidth to properly configure solutions beyond defaults, missing opportunities for better recovery options. With Ransomware as a Service and AI-assisted phishing, attacking a 50-person company costs nearly the same as a much larger one.
Zero-trust security is essential for SMBs and is not merely an enterprise product; it requires multifactor authentication, network segmentation and inventory, endpoint detection and response, robust backup and recovery, and regular employee training. Every user and device must be verified with least-privilege access, and businesses must know what assets exist on their networks. Secure access service edge (SASE) provides consistent cloud-delivered policy for users anywhere, while governance is needed to prevent sensitive data leakage into AI tools.
Ultimately, SMBs should prioritize resilience over pure prevention by assuming breaches will occur and designing for rapid detection, response, and recovery. This shift from asking if the network is secure to understanding where data goes and what touches it is critical for operational continuity in the face of evolving threats.