Enhancing your security posture
If you carefully read this entire chapter, it should be very clear that you can't use the old approach to security facing today's challenges and threats. When we say old approach, we are referring to how security used to be handled in the early 2000s, where the only concern was to have a good firewall to protect the perimeter and have antivirus on the endpoints. For this reason, it is important to ensure that your security posture is prepared to deal with these challenges. To accomplish this you must solidify your current protection system across different devices, regardless of the form factor.
It is also important to enable IT and security operations to quickly identify an attack, by enhancing the detection system. Last but certainly not least, it is necessary to reduce the time between infection and containment by rapidly responding to an attack by enhancing the effectiveness of the response process. Based on this, we can safely say that the security posture is composed of three foundational pillars as shown in the following diagram:
Figure 5: The three pillars of an effective security posture: Protection, Detection, and Response
These pillars must be solidified; if in the past the majority of the budget was put into protection, nowadays it's even more imperative to spread that investment and level of effort across all pillars. These investments are not exclusively in technical security controls; they must also be done in the other spheres of the business, which includes administrative controls. It is recommended to perform a self-assessment to identify the weaknesses within each pillar from the tool perspective. Many companies evolved over time and never really updated their security tools to accommodate the new threat landscape and how attackers are exploiting vulnerabilities.
A company with an enhanced security posture shouldn't be part of the statistics that were previously mentioned (229 days between the infiltration and detection); the response should be almost immediate. To accomplish this, a better incident response process must be in place, with modern tools that can help security engineers to investigate security-related issues. Chapter 2, Incident Response Process, will cover incident response in more detail and Chapter 14, Investigating an Incident, will cover some case studies related to actual security investigations.
Cloud Security Posture Management
When companies start to migrate to the cloud, their challenge to keep up with their security posture increases, since the threat landscape changes due to the new workloads that are introduced. According to the 2018 Global Cloud Data Security Study conducted by Ponemon Institute LLC (January 2018), forty nine percent of the respondents in the United States are "not confident that their organizations have visibility into the use of cloud computing applications, platform or infrastructure services." According to Palo Alto 2018 Cloud Security Report (May 2018), sixty two percent of the respondents said that misconfiguration of cloud platforms is the biggest threat to cloud security. From these statistics we can clearly see a lack of visibility and control over different cloud workloads, which not only cause challenges during the adoption, but it also slows down the migration to the cloud. In large organizations the problem becomes even more difficult due the dispersed cloud adoption strategy. This usually occurs because different departments within a company will lead their own way to the cloud, from the billing to infrastructure perspective. By the time Security and Operations Team becomes aware of those isolated cloud adoptions, these departments are already using applications in production and integrated with the corporate on-premises network.
To obtain the proper level of visibility across your cloud workloads, you can't rely only in a well-documented set of processes, you must also have the right set of tools. According to Palo Alto 2018 Cloud Security Report (May 2018), eighty four percent of the respondents said that "traditional security solutions either don't work at all or have limited functionality." This leads to a conclusion that, ideally, you should evaluate your cloud's provider native cloud security tools before even start moving to the cloud. However, many current scenarios are far from the ideal, which means you need to evaluate the cloud provider's security tools while the workloads are already on it.
When talking about cloud security posture management (CSPM), we are basically referring to three major capabilities: visibility, monitoring, and compliance assurance.
A CSPM tool should be able to look across all these pillars and provide capabilities to discover new and existing workloads (ideally across different cloud providers), identify misconfigurations and provide recommendations to enhance the security posture of cloud workloads, and assess cloud workloads to compare against regulatory standards and benchmarks. The table following has general considerations for a CSPM solution: