This detailed guide is for all the users who want to know what is CASB Security and how does it help in securing cloud data.
What Is CASB Security?
Cloud Access Security Brokers provide cloud security solutions that work on the technology mediating the data stored in the cloud between the in-house IT architecture of the organizations with the cloud vendor environments. CASB is essentially a cloud security enforcement point that is placed between the cloud service providers and the cloud service consumers that help in enforcing strict security policies and imposing certain access restrictions for the cloud-based apps that are being accessed. Hence, it is no surprise that given the spate of recent
increase in data breaches, organizations are turning to CASB vendors to address their cloud security risks. This deployment of CASB also helps in enforcing security policies which comply with international standard regulations. When organizations think about implementing CASB security for cloud services that are beyond their direct control, then a layered slow approach is essential rather than a full deployment across all the resources.
The 4 Pillars of CASB Security Solutions
- Greater Cloud Visibility
- Increased Data Security
- Compliance Achieved
- Augmented Threat Protection
CASB as the Extended Security Arm
Be it the sanctioned apps or any unsanctioned cloud apps or services, what companies desire for in CASB is greater visibility and increased control. The best way would be to approve the useful services and govern access of activities and data within the services rather than a complete block/allow stance of the cloud services. A fine example would be the full access of sanctioned suite like the Microsoft Office 365 on managed devices and only email usage to unmanaged devices. Also, stringent action like enforcing “no outside share” of the unmanaged organization devices should be sanctioned. Definitely while organizations need cloud security, they must also keep an eye on the expenditure involved like the license costs and can cut down on costs by finding redundant functions and applications. The first step when organizations think of moving their data on to the cloud services would be compliance with the rules and regulations designed to ensure the safety of their personal corporate data. CASB solutions help organizations comply with international security protocols like the HIPAA, HITECH, PCI, FINRA or the FFIEC. CASB security solutions should be a combination of highly sophisticated DLP detection mechanisms like document fingerprinting and reduction in the detection surface area using context like user, location, activity etc. An effective CASB solution always warns the IT department of an organization about the suspected violations when sensitive data is at rest or on the move on the cloud. Organizations on their part need to be circumspect of their employees and make certain that there are no cloud malware threats through the cloud storage services or even through their associated clients and services. CASB solutions help in scanning and remediating real-time threats whenever there is an unauthorized access to the cloud services or data. Hence, it becomes necessary that the organizations protect themselves from various cloud threats that combine intelligence, prioritized analysis and correction of threats that may originate from the cloud services.
Topmost Categories of CASB Use Cases
- Govern Usage: The best thing for organizations would be to take a coarse-grained approach to govern the granular visibility and control of cloud services. The usage should be allowed on the basis of identity, activity, service and data. Policies need to be defined based on service and risk category and actions chosen may vary from blocking, bypassing, alerting or quarantining the sensitive data.
- Data Security: Sensitive data protection should be to the whole and not only to the ones that an organization sanctions. All the users whether on-premises or remote, on a mobile or accessing from a public web-browser need to be covered with the advanced DLP solutions and care is to be taken regarding the protection of sensitive data of the organization, either sanctioned or unsanctioned.
- Threat Protection: Advanced CASB security solutions help in guarding crucial data against malware and ransomware attacks.
Having said that, organizations must combine their security infrastructures with out-of-the-box integrations and workflows so that the organization data is fully safe and secure!