The three layers of cloud security & how they stop attacks
Before we jump in, let’s define what cloud security is. Cloud security protects everything you compute, run, and host in the cloud. It homes in on storage and network protection to block threats, manage access, and improve disaster recovery.
To do this, cloud security has three layers of protection: prevention, detection, and response. While many organizations invest heavily in prevention and detection, they fall short on response. Prevention and detection lower risk, but it’s your team’s response that ultimately limits damage.
Below, we’ll break down each cloud security layer.
Prevention
Prevention tools are the first line of defense against breaches, so companies should invest in this layer with things like:
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Encryption and identity access management (IAM) tools that manage least-privilege rules in Zero Trust environments
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Cloud security posture management (CSPM) platforms that catch misconfigurations like exposed endpoints and open storage buckets
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Application security scans to toughen up code against threat actors
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Network controls and firewalls to keep attackers out
These tools are important, but they won’t stop all threats. Attackers with stolen credentials slip past these defenses. And malicious insiders, like the ex-Google engineer found guilty of stealing AI secrets, could access and misuse private company data.
Detection
When attacks sneak by the prevention layer, your team is on the hook to spot the red flags. With logging and monitoring tools, Security Operations Center (SOC) analysts collect and analyze data to hunt for threats.
But detection alone doesn’t resolve incidents. Detection tools only tell cybersecurity analysts and engineers that something’s wrong, like a malware infection. Once teams spot the issue, they still need to respond to the threat.
Response
The final response layer involves blocking or containing the threat and protecting company assets. It might also include disaster recovery or decisions about paying a ransom.
Modern cloud security management solutions struggle with this layer because it calls for resources many teams don’t have: expertise, judgment, and availability. Burnout in cybersecurity, alongside a growing talent shortage, is a well-known issue. This makes it tough for companies to build their own SOCs and provide 24/7 coverage.