Contracting a managed cybersecurity service can seem technically complex for many managers. This guide provides the complete framework for evaluating it: from auditing your current security posture to selecting the most appropriate provider and integrating the service into your operations.
Phase 1: Evaluating Your Current Security Posture
The starting point is understanding your current risk level. A basic security posture assessment analyses: the inventory of internet-exposed assets (servers, VPNs, web applications), the patching status of systems (how many devices have known unpatched vulnerabilities), the configuration level of existing security tools (antivirus, firewall, email filtering), access and authentication policies (MFA, password management, least privilege), and the team's awareness level against social engineering attacks.
Critical Risk
Unpatched systems with known vulnerabilities, no MFA, weak passwords on admin accounts, unverified backups.
High Risk
No active network monitoring, no documented incident response plan, no employee phishing training.
Medium Risk
Basic security implemented but without continuous visibility, no proactive vulnerability management, no periodic penetration testing.
Low Risk
All basic controls implemented, active monitoring, documented and tested response plan, regular team training.
Phase 2: Defining the Service Scope
Not all SMEs need the same level of managed cybersecurity. The scope must be defined based on sector (greater regulation implies greater security requirements), the type of data handled (payment card data, health data, or sensitive personal data require specific controls), the operational dependency on technology (the greater the dependency, the greater the potential impact of an incident), and the volume of electronic transactions.
Organisations that contracted an MSSP before suffering a security incident reduced the total cost by 42% compared to those that had to engage emergency response services.
Phase 3: Standard SECaaS Service Components for SMEs
A complete SECaaS service for SMEs typically includes: SIEM as a service (collection and analysis of security logs from all systems to detect anomalous patterns), managed EDR (centralised deployment and management of detection agents on endpoints), vulnerability management (periodic scans and patching prioritisation by risk level), managed next-generation firewall (configuration, monitoring, and rule updates), and incident response (MSSP team intervention when an active incident is detected).
Phase 4: MSSP Evaluation and Selection Criteria
Incident Response SLA
For critical incidents: response within 30 minutes. For high incidents: under 2 hours. These SLAs must be contractually guaranteed.
Provider Certifications
ISO 27001, SOC 2 Type II, and for Spain CCN-CERT certification are indicators of provider maturity. Don't contract without verifying certifications.
Data Location
Under GDPR, your company's security data must be processed in data centres located in the EU. Require contractual confirmation.
Reports and Visibility
You must receive detailed monthly reports and have access to a management portal showing real-time security status.
Phase 5: Integrating the Service into Business Operations
Contracting the MSSP is not the end of the process — it's the beginning. Service integration requires: defining the incident escalation tree (who the MSSP calls and when), technical access to systems (the MSSP needs permissions on your network and systems to operate), technical onboarding process (agent deployment, correlation rule configuration, alert threshold tuning), and quarterly posture review (meeting with the MSSP team to review trends, incidents, and pending improvements).
Want to evaluate your current security posture and explore which managed cybersecurity service your business needs? Request a free consultation .