Cyber Crisis Management: The First 72 Hours Are Critical

Emergency action plan for SMBs hit by a cyberattack.

Table of Contents:

Threats that specifically target SMBs
10 essential security 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, SMBs have become the prime target for 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 between €10,000 and €500,000). SMBs are targeted because they pay up more often than large enterprises, 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 enabling attackers to craft messages that are nearly indistinguishable from legitimate ones.

Data theft

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

Supply chain attacks

Attackers target your suppliers or service providers as a backdoor into your business. The security of your ecosystem matters just as much as your own.

10 essential security measures for SMBs

Automated backups: follow the 3-2-1 rule (3 copies, 2 different media, 1 offsite). Test your restore process regularly.

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

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

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

Antivirus and EDR: endpoint protection with advanced threat detection (EDR rather than traditional antivirus).

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

Access management: apply the principle of least privilege (each user only accesses what they actually need).

Data encryption: drives, emails, and file transfers.

Business continuity plan: documented procedures ready to go 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 across the board:

Anomaly detection: AI identifies suspicious behavior in real time
Anti-phishing: AI-powered email analysis to flag 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 data processing register
Notify the CNIL within 72 hours of a data breach
Obtain explicit consent for the collection of personal data
Honor data subject rights (access, rectification, deletion)

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

Go further: check out our SMB Digital Transformation: 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.