Securing Your APIs and Third-Party Integrations

Best practices for protecting the connections between your tools and services. Table of Contents:

Threats that specifically target SMBs
The 10 essential measures for SMBs
Cybersecurity budget for an SMB
AI in the service of SMB cybersecurity
GDPR and legal obligations
Conclusion

Cybersecurity is no longer a luxury reserved for large corporations. In 2026, small and medium-sized businesses (SMBs) have become the prime target of cyberattacks — precisely because they tend to be the least protected. 43% of cyberattacks now target small businesses, and 60% of SMBs that suffer a serious attack shut down within 6 months.

Threats that specifically target SMBs

Ransomware

Ransomware remains the number one threat. Attackers encrypt your data and demand a ransom (typically ranging from €10,000 to €500,000). SMBs are targeted because they pay up more often than large corporations, which have dedicated security teams.

Phishing and social engineering

90% of attacks start with a phishing email. Techniques are becoming increasingly sophisticated, with generative AI now capable of crafting emails that are nearly indistinguishable from legitimate ones.

Data theft

Your SMB's customer, supplier, and financial data holds considerable value on the dark web. A data breach triggers legal obligations (notification to the CNIL within 72 hours), GDPR fines, and a serious loss of trust.

Supply chain attacks

Attackers target your suppliers or service providers as a way to reach your business. The security of your ecosystem matters just as much as your own.

The 10 essential measures for SMBs

Automated backups: follow the 3-2-1 rule (3 copies, 2 different media, 1 offsite). Regularly test your ability to restore data.

Automatic updates: keep operating systems, software, and firmware up to date at all times. 85% of attacks exploit known vulnerabilities.

Multi-factor authentication (MFA): enable it on all critical accounts (email, banking, cloud, CRM). MFA blocks 99% of password-based attacks.

Team training: raise awareness around phishing, password best practices, and incident reporting. Refresh training every 6 months.

Antivirus and EDR: protect endpoints with advanced detection tools (EDR rather than traditional antivirus).

Firewall and network segmentation: isolate critical systems from the rest of the network.

Access management: apply the principle of least privilege — each user only has access to what they need.

Data encryption: cover disks, emails, and file transfers.

Business continuity plan: document clear procedures to follow in the event of an incident.

Cyber insurance: transfer residual risk to an insurer.

Cybersecurity budget for an SMB

A good rule of thumb: invest 5 to 10% of your IT budget in cybersecurity.

For an SMB with 10–50 employees:

Core solutions (antivirus, firewall, MFA): €200–500/month
Cloud backups: €50–200/month
Annual training: €1,000–3,000
Security audit: €3,000–10,000 (one-time)
Cyber insurance: €1,000–5,000/year

Total: €6,000–15,000/year. That's a fraction of the cost of a cyberattack (average cost for an SMB: €130,000).

AI in the service of SMB cybersecurity

Artificial intelligence is strengthening security in several ways:

Anomaly detection: AI identifies suspicious behavior in real time
Anti-phishing: AI-powered email analysis to detect phishing attempts
Automated response: automatic isolation of compromised machines
Vulnerability analysis: continuous scanning of your attack surface

GDPR and legal obligations

As a French SMB, you are required to:

Appoint a GDPR point of contact (even part-time)
Maintain a record of data processing activities
Notify the CNIL within 72 hours of a data breach
Obtain explicit consent for the collection of personal data
Honor individuals' rights (access, correction, deletion)

GDPR fines can reach up to 4% of annual revenue or €20 million.

Go further: check out our Digital Transformation for SMBs: The Ultimate 2026 Guide, which covers the full picture.

Conclusion

Cybersecurity is an investment, not a cost. SMBs that secure their systems protect their business, their customers, and their reputation. The right solutions are out there, they're financially accessible, and the return on investment is immediate — measured in risks avoided.

Secure your SMB: request a security audit.