Secure Your APIs
Your APIs power your web apps, mobile clients, and third-party integrations. Zero Day helps you ensure authorization checks are enforced on every route, rate limits prevent scraping, and BOLA/IDOR vulnerabilities are eliminated.
What We Help You Secure
We cover RESTful routes, GraphQL schemas, gRPC services, and API gateways.
BOLA & IDOR Mitigation
Verify that users can only query database objects they explicitly own.
GraphQL Depth & Cost Control
Prevent recursive query DoS attacks and unauthorized field exposures.
JWT & Token Authorization
Validate signature verification, expiration claims, and scope limits.
Adaptive Rate Limiting
Prevent automated scraping and brute-force traffic spikes.
Mass Assignment Shielding
Block hidden payload properties from mutating sensitive database attributes.
Shadow API Discovery
Identify forgotten or unauthenticated endpoints operating in production.
Why Security Matters for Your Business
Security isn’t just technical — it shields the engine powering your entire platform.
Data Exfiltration Defense
API authorization flaws (BOLA) are the #1 cause of massive database leaks today.
System Availability & Costs
Unthrottled APIs invite Denial of Service (DoS) attacks and balloon server infrastructure bills.
Partner Ecosystem Trust
B2B customers and integration partners depend on secure, predictable API authorization.
How We Work With You
A clear, founder-friendly process from first conversation through launch.
01.Understand Product
We review your OpenAPI/Swagger specs, GraphQL schemas, and API gateway routing.
What You Gain
The outcomes engineering leaders care about — delivered before your API goes public.
Launch With Confidence
Publish your API endpoints knowing authorization is strictly enforced.
Eliminate BOLA Leaks
Prevent attackers from harvesting customer data by altering URL IDs.
Protect Server Infrastructure
Prevent API scraping and resource exhaustion attacks.
Pass B2B Integration Audits
Provide enterprise partners with verified API security assessments.
Harden Token Handling
Ensure JWT tokens and API keys cannot be spoofed or replayed.
Maintain API Reliability
Keep response latency low and uptime high under all traffic conditions.
Questions Engineering Teams Ask
Everything you need to know about our pre-launch security audits, multi-tenant isolation, and penetration testing process.
What is BOLA / IDOR and why is it so common in APIs?
Broken Object Level Authorization occurs when an API endpoint takes an ID param without checking if the requesting user owns that object. It is the #1 API vulnerability.
Do you audit GraphQL APIs as well as REST?
Can you scan our OpenAPI / Postman collection automatically?
Protect Your Product Before Launch
With Expert Security.
Our cybersecurity team will conduct a deep manual assessment of your architecture, uncover vulnerabilities, and give you actionable defense.