A common cybersecurity question is whether penetration testing should happen monthly, quarterly or annually.
For many organisations, annual pen testing is a useful baseline – but it should not automatically be the only time testing occurs. The appropriate frequency depends on how quickly your technology environment changes and the level of cybersecurity risk your organisation faces.
Is annual penetration testing enough?
Annual penetration testing can provide a useful independent review of an organisation’s security posture. However, a lot can change during twelve months.
- Launch new applications
- Move workloads to the cloud
- Introduce new firewalls
- Change remote-access systems
- Add APIs
- Acquire another company
- Change network architecture
- Implement new security products
- Discover critical vulnerabilities
A pen test performed nine months ago does not necessarily tell you whether today’s environment is secure.
When should additional tests be performed?
Launching a new application
Customer-facing web applications and portals should ideally undergo security testing before they become publicly accessible.
Major infrastructure changes
Changes to network architecture, firewalls, VPNs or segmentation can introduce unexpected security gaps.
Cloud migration
Moving workloads into Azure, AWS or other cloud platforms changes the organisation’s attack surface. Cloud configuration should therefore be included in security testing.
Major application upgrades
Changes to authentication, payment processes, APIs or application architecture can introduce vulnerabilities.
Security incidents
After a cybersecurity incident, testing can help determine whether corrective controls have addressed the weaknesses involved.
Significant mergers or acquisitions
Connecting previously separate IT environments creates new trust relationships and potential attack paths.
What about compliance requirements?
Some organisations may have industry or contractual requirements governing pen testing frequency. PCI DSS, for example, includes requirements for regular internal and external pen testing, while segmentation controls used to isolate the cardholder-data environment have specific test requirements, including testing at least every 12 months and following changes.
Penetration testing should not replace continuous monitoring
There is an important limitation to every test: it represents the environment at a particular point in time. Your systems can change the following week.
That is why it should form part of a broader cybersecurity programme including:
- Vulnerability management
- Endpoint detection and response
- Security monitoring
- Patch management
- Threat detection
- Configuration management
- Security awareness
- Incident response
A practical testing schedule
Continuously: Security monitoring and vulnerability identification
Monthly or quarterly: Vulnerability reviews and remediation tracking
Annually: Comprehensive penetration testing
After significant changes: Targeted penetration testing
After remediation: Retesting of identified vulnerabilities
Higher-risk organisations may choose more frequent penetration testing.
The goal is validation, not compliance paperwork
A penetration test should not simply produce a report that sits in a folder until the next audit. Its real value is discovering weaknesses before attackers do. Findings should be assigned to responsible teams, remediation deadlines established and critical vulnerabilities retested.
Prima Secure penetration testing
Prima Secure provides penetration testing across internal infrastructure, external environments, applications, APIs, Active Directory, wireless networks and other attack surfaces. We can also combine penetration testing with continuous vulnerability management and 24/7 security monitoring, helping organisations move from periodic testing toward continuous cybersecurity assurance.
Speak to Prima Secure about building a penetration testing programme appropriate to your organisation’s risk profile.