What Does Mean Time to Contain (MTTC) Mean?

Security experts regularly warn of the ever-growing threats posed by cybercriminals. The question is no longer whether a company will fall victim to an attack, but when. Strengthening cybersecurity is therefore a critical step toward protecting your data.

The Mean Time to Contain: What Does MTTC Mean?

Mean Time to Contain is a critical metric in IT security. It measures the average time required to contain security incidents. MTTC encompasses the full effort needed to detect and resolve incidents while simultaneously reducing the probability of similar events recurring. This makes Mean Time to Contain an essential measurement tool in incident response management.

Definition and Explanation of Terms

The abbreviation MTTC stands for Mean Time to Contain. This metric evaluates the performance of your incident management and focuses on the key activities involved in handling a security incident:

• The time needed to analyze the likelihood of further similar incidents.
• The time frame required to confirm the results.
• The time needed to minimize the probability of recurrence.

Mean Time to Contain therefore provides a holistic view of your response time to security incidents. It also gives you the knowledge needed to measure and continuously improve your cybersecurity posture.

Calculation of Mean Time to Contain

MTTC represents the total time required to respond to a security incident. This includes the effort to remediate the vulnerabilities that enabled the attack. The data collected through this process helps prevent similar incidents in the future.

The calculation is straightforward: sum the total time spent on all individual incidents, then divide by the number of incidents. The result is your mean containment time.

Most organizations calculate their Mean Time to Contain on a regular basis. It is advisable to include all incidents within a predefined time frame. For meaningful improvement in response times, a monthly review is recommended.

MTTC, MTTD, MTTA, and MTTR

Mean Time to Contain is just one of several metrics that support the improvement of your IT security measures. Other relevant metrics include:

• MTTD: The Mean Time to Detect is the average time required to identify a security incident. This metric helps you analyze your current cyber monitoring capabilities and improve their effectiveness.
• MTTA: Mean Time to Acknowledge focuses on the time it takes to recognize a security incident for what it is. Only once the team identifies the incident can appropriate alerts be issued. The longer recognition takes, the later remediation can begin.
• MTTR: The Mean Time to Respond describes the average time until an affected system is restored to normal operation. It begins with the initial incident report, which typically occurs during the MTTA phase, and ends when the problem is resolved.
• MTTC: Mean Time to Contain provides a holistic view of your security incident response. It combines the individual metrics, starting with the time required to detect an incident and extending through the time needed to minimize the likelihood of similar future incidents.

The Importance of MTTC for Cybersecurity

Mean Time to Contain is a key metric for strengthening IT security. It enables you to evaluate the effectiveness of your tools and security strategies more accurately. This encompasses all steps required to detect, analyze, and contain a security incident. For particularly severe incidents, On-Demand Penetration Testing can provide the security team with valuable support, helping ensure that remediation measures achieve the desired outcome.

Mean Time to Contain accounts for several aspects of Incident Response Management that can significantly improve IT security. Nevertheless, it is important to always consider this metric in conjunction with other measurements. This approach helps you identify more quickly which areas of your containment process need improvement.

Reduce MTTC: Best Practices for Improving Mean Time to Contain

To improve your Mean Time to Contain, focus on these proven best practices:

• Analyze incoming incidents in as much detail as possible to identify the optimal solution. Automated consolidation of different data sets is particularly effective for this purpose.
• Maintain consistent monitoring and carry out regular security measures, including periodic pentests.
• Keep an action plan ready so you can respond quickly, even with limited resources.
• Automate your incident management system to ensure prompt and comprehensive notification of new incidents.
• Assemble a dedicated security team capable of taking immediate action when an emergency occurs.

Conclusion

Mean Time to Contain is a vital metric for improving IT security. It evaluates how effectively you respond to security incidents and how quickly containment is achieved. Real-time threat intelligence plays a particularly important role in this process. Additionally, partnering with an independent or external security team -- such as the experts at turingpoint -- can help you improve your Mean Time to Contain in the short term and gain greater visibility into threats.