The Top Cyber Threats Facing SMBs in 2025

90 days ago • 12 views • The Sequence • the-sequence.com

Small and midsize businesses (SMBs) are under siege in 2025. Attackers know these organizations often run lean IT teams with limited budgets, making them prime “path of least resistance” targets.

From API abuse to ransomware, insider risks, and even nation-state espionage, the threat landscape is evolving rapidly — and SMBs are squarely in the crosshairs. Here’s what your team needs to know.

1. API Abuse

APIs are the backbone of modern business, powering integrations, automations, and customer experiences. But they’ve also become attackers’ favorite entry point: 95% of malicious traffic now abuses authenticated sessions, and nearly all of it targets public-facing APIs.

The risk is amplified because most SMBs lack formal API security governance. Consider what’s at stake:

  • Financial data: Enables invoice manipulation and business email compromise (BEC).
  • Customer or health records: Used to pressure victims into paying, citing compliance violations (GDPR, HIPAA).
  • Credentials & access tokens: Sold by Initial Access Brokers to ransomware affiliates.

Some of the most frequently targeted APIs include:

  • Cloud APIs for infrastructure abuse.
  • Microsoft Graph API for harvesting