⚙️ Sherlocked Security – Serverless Security Assessment
Secure Your Serverless Functions Against Misconfigurations, Overprivileged Access, and Injection Risks
📄 1. Statement of Work (SOW)
Service Name: Serverless Security Assessment
Client Type: API-First Startups, SaaS Companies, Event-Driven Platforms, FinTech
Service Model: Manual + Automated Review of Serverless Architecture
Compliance Coverage: OWASP Serverless Top 10, CIS Benchmarks, NIST 800-53, ISO 27001, PCI-DSS, SOC 2
Environments Covered:
- AWS Lambda
- Azure Functions
- Google Cloud Functions
- FaaS on Kubernetes (Knative/OpenFaaS)
🧠 2. Our Approach (with Visual)
🔹 Event-to-Execution Threat Coverage
🔹 Principle of Least Privilege Focus
🔹 Architecture & Code-Level Risk Review
[Function Inventory] → [Trigger & Event Analysis] → [Permission Review] → [Code Review & Payload Testing] → [Runtime Behavior Inspection] → [Risk Scoring] → [Fix Strategy & Revalidation]
🧪 3. Methodology (with Visual)
[Kickoff] → [Function Discovery & Mapping] → [Trigger Source Review] → [IAM & Secrets Audit] → [Input Validation Checks] → [Vulnerability Testing (XSS, SSRF, IDOR)] → [Runtime Logs Review] → [Remediation Planning] → [Fix Revalidation & Report Signoff]
📦 4. Deliverables to the Client
- ✅ Serverless Risk Matrix
- 🧾 Statement of Work (SOW)
- 📘 Technical Assessment Report:
- Trigger/Event Flow Analysis
- IAM Role & Access Review
- Function-Level Security Testing Results
- Severity Ratings (CVSS + Contextual Risk)
- Screenshot Evidence & Logs
- Fix Recommendations
- References & OWASP Guidance
- 📊 Visual Diagrams (Event Flow, Permission Map)
- 📽️ Report Review Call with Engineering Team
- 🔁 Free Retesting Round
- 🛡️ Serverless Security Certificate
🤝 5. What We Need from You (Client Requirements)
- ✅ Access to Serverless Dashboard / Console
- ✅ Terraform / IaC scripts (if used)
- ✅ Trigger/Event Sources (API Gateway, S3, SNS, etc.)
- ✅ Function Source Code (Optional but preferred)
- ✅ Logs from CloudWatch/Stackdriver/Monitor
- ✅ Contact from DevSecOps or Cloud Team
🧰 6. Tools & Technology Stack
- 🔍 OWASP Serverless Security Framework
- 🧪 LambdaGuard / CloudSploit / Prowler
- 🔁 Custom SSRF/XSS Injection Payloads
- 🧬 TruffleHog / Gitleaks (Secrets Detection)
- 📦 LocalStack / SAM CLI for sandbox testing
- 🧠 AI-Augmented Static Code Review
🚀 7. Engagement Lifecycle (Lead → Closure)
1. Discovery Call 2. Access Provisioning 3. Kickoff Meeting 4. Function Inventory & Mapping 5. Security Testing & Code Review 6. Draft Report + Review Call 7. Final Report Delivery 8. Fix Support + Retesting 9. Security Certificate Issued
🌟 8. Why Sherlocked Security? (Our USP)
| Feature | Sherlocked Advantage |
|---|---|
| ⚙️ Deep Function Coverage | Trigger-to-execution analysis included |
| 🔐 IAM & Secrets Focus | Overprivilege and hardcoded secret detection |
| 📘 Manual Code Review | Optional static review for critical functions |
| 🔁 Retest Included | One round of retesting post-fix at no charge |
| 📽️ Visuals + Logs | Maps of triggers, permission chains, risks |
| 🏆 Certificate | Issued after successful revalidation |
📚 9. Real-World Case Studies
🛑 SSRF in Image Processing Lambda
Issue: Lambda accepting URL input made SSRF possible to internal endpoints
Impact: Internal metadata service accessed, temporary credentials leaked
🛠️ Our Fix Journey: API-Driven EdTech App
Client: EdTech platform using AWS Lambda + API Gateway
Findings:
- Broad
*:*IAM permissions - No input validation on form handlers
Our Role: - SSRF, IDOR, and access chain testing
- Delivered function-level IAM tightening plan
Outcome: - Cleared ISO 27001 assessment
- Full policy-based hardening applied
🛡️ 10. SOP – Standard Operating Procedure
- Discovery Call
- Access Provisioning
- Function Inventory & Mapping
- Permission & Event Trigger Review
- Manual & Automated Security Testing
- Draft Report & Walkthrough
- Fix Planning & Implementation Support
- Retesting of Critical Functions
- Certificate Issuance
📋 11. Sample Serverless Checklist (Preview)
- Inventory serverless functions (e.g., AWS Lambda, Azure Functions).
- Analyze function permissions and IAM role scoping.
- Review code and environment variables for secrets.
- Scan packages and dependencies for known vulnerabilities.
- Check event triggers and data sources for abuse potential.
- Enable detailed logging and monitoring.
- Use RASP or instrumentation for runtime protection.
- Limit network access and outbound connections.
- Implement timeouts and memory limits to reduce abuse.
- Enforce versioning and secure CI/CD practices.
📬 Contact Us or 📅 Book a Free Consultation The security of serverless architecture is crucial for safeguarding data and applications. Our assessment report, sherlocked_security_serverless_security_assessment, provides a comprehensive analysis to identify vulnerabilities and fortify defenses. To further discuss our findings or schedule a consultation, please [**📬 Contact Us**](<https://sherlockedsecurity.com/contact-us/>) or [**📅 Book a Free Consultation**](<https://sherlockedsecurity.com/booking/>).