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FunctionShield is a free serverless security tool. Aqua Security Serverless Functions is a commercial serverless security tool by Aqua Security Software Ltd.. Compare features, ratings, integrations, and community reviews side by side to find the best serverless security fit for your security stack.
Based on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion:
Developers building on AWS Lambda or Google Cloud Functions who need to lock down function behavior at runtime should start with FunctionShield; it enforces strict allowlists for system calls, file access, and network connections directly in your code rather than relying on perimeter controls. The free, open-source model (40 GitHub stars, no licensing friction) means you can pilot it in staging without procurement delays. Skip this if you're looking for detection and forensics after a breach; FunctionShield is prevention-only, which is either exactly what you want or a deal-breaker depending on your threat model.
Aqua Security Serverless Functions
Teams running AWS Lambda at scale need Aqua Security Serverless Functions because it catches permission creep and runtime code injection before they become breaches, not just after deployment. The shift-left scanning via CI/CD integration combined with NanoEnforcer runtime agents means you're catching vulns early and stopping exploitation attempts in production; NIST ID.RA and DE.CM coverage reflect that dual-layer approach. Skip this if your serverless footprint is minimal or you're still standardizing on a single cloud provider, since the value compounds with workload volume and multi-function complexity.
FunctionShield is a Serverless Security Library for Developers to enforce strict security controls on AWS Lambda & Google Cloud Functions runtimes.
Security platform for serverless functions with vulnerability scanning & runtime
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Common questions about comparing FunctionShield vs Aqua Security Serverless Functions for your serverless security needs.
FunctionShield: FunctionShield is a Serverless Security Library for Developers to enforce strict security controls on AWS Lambda & Google Cloud Functions runtimes..
Aqua Security Serverless Functions: Security platform for serverless functions with vulnerability scanning & runtime. built by Aqua Security Software Ltd.. headquartered in United States. Core capabilities include Vulnerability scanning for functions with CVE and malware detection, Secrets scanning for cloud provider keys, CI/CD pipeline integration for shift-left security..
Both serve the Serverless Security market but differ in approach, feature depth, and target audience.
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