Security Implementation

Technical documentation of actual security measures implemented in the Succedence platform. No marketing claims—just the code-level protections in place.

Authentication & Session Management

Supabase Auth

Primary authentication layer using Supabase Auth service with email/password and OAuth providers.

Implementation: /middleware.ts, /lib/supabase/client.ts

Session Handling

•Token storage: Supabase Auth tokens stored in HTTP-only cookies (not localStorage)
•Server-side validation: Middleware validates session on every protected route request
•Service role key: Admin operations use separate service role key with elevated privileges
•Anon key: User-level API calls use anonymous key with row-level security enforcement

Route Protection

Public Routes (No Auth Required)

• / (homepage)
• /valuation (free tool)
• /pricing
• /how-it-works
• /brokers
• /blog/*

Protected Routes (Auth Required)

• /dashboard
• /profile
• /preferences
• /matches
• /saved-listings
• /listings/*/edit
• /admin (email whitelist)

Authorization & Role-Based Access Control

User Roles

Buyer

• Browse listings
• Save favorites
• Receive matches
• Contact sellers

Seller

• Create listings
• Edit own listings
• View inquiries
• Respond to buyers

Broker

• All seller permissions
• Public profile
• Client management
• Bulk operations

Admin

• User management
• Listing moderation
• Usage analytics
• Plan changes
• Import tools

Admin Access Control

Admin routes protected by hardcoded email whitelist in middleware:

const ADMIN_EMAILS = ['evank8029@gmail.com', 'succedence@gmail.com']

Location: /middleware.ts:25-28

API Security & Rate Limiting

Plan-Based Usage Enforcement

All AI and analysis endpoints enforce quota limits based on user plan. Violations are logged to database with IP address and user agent.

Implementation: /lib/middleware/usage-security.ts

Security Checks

✓IP address logging: Captures x-forwarded-for and x-real-ip headers for audit trail
✓User agent tracking: Records client type for abuse detection
✓Authentication verification: Validates Supabase session before quota checks
✓Plan-based access control: Rejects requests exceeding plan limits with 429 status
✓Usage violation logging: All limit-exceeded events stored in usage_violations table

Cron Job Protection

Background jobs (nightly matching, digest emails) protected by secret header:

Header Required: x-cron-secret: [CRON_SECRET]

Endpoints Protected:

• /api/match/run (nightly matching engine)
• /api/cron/daily-tasks (batch operations)
• /api/cron/upgrade-expired-trials (plan management)

Development bypass: DEV_BYPASS_AUTH=true (development only, not in production)

HTTP Security Headers

X-Content-Type-Options

Prevents MIME type sniffing

X-Frame-Options

Prevents clickjacking attacks

X-XSS-Protection

Browser XSS filtering enabled

Strict-Transport-Security

HTTPS enforcement (planned)

Data Protection & Privacy

Database Security

•Supabase Row-Level Security: Database-level access control policies
•Encrypted at rest: Supabase handles encryption (AES-256)
•TLS in transit: All database connections encrypted (TLS 1.2+)
•Credential rotation: Service keys stored in environment variables

User Data Handling

•Minimal data collection: Email, name, phone (optional), company (optional)
•Financial data: Not stored long-term; used for calculation then discarded
•Valuation history: Stored with user consent for report regeneration
•Anonymous usage: Free tier tracks IP + user agent (no PII required)

Third-Party Services

•Supabase: Database, auth, storage (SOC 2 Type II)
•OpenAI: AI analysis features (optional, user-initiated)
•Stripe: Payment processing (PCI DSS compliant)
•Vercel: Hosting platform (ISO 27001)

Audit Logging

•Usage violations: IP, timestamp, violation type, user agent
•Authentication events: Login, logout, password reset tracked by Supabase
•Admin actions: User role changes, plan modifications logged
•Daily usage: Analysis count, cost tracking stored per user

Current Limitations & Roadmap

Transparency about security features NOT currently implemented:

Not Yet Implemented

✗SOC 2 Type II compliance: Mentioned on homepage as "in progress" but not certified
✗Penetration testing: No formal third-party security audits conducted
✗GDPR compliance tooling: No automated data export or deletion workflows
✗Two-factor authentication: Only email/password or OAuth currently supported
✗WAF (Web Application Firewall): No dedicated DDoS or bot protection layer

On Roadmap

⧗CSP headers: Content Security Policy to prevent XSS injection
⧗Enhanced rate limiting: Per-endpoint granular throttling beyond plan limits
⧗Anomaly detection: Automated flagging of unusual usage patterns
⧗Encrypted field-level storage: Additional encryption layer for sensitive financial data
⧗Automated vulnerability scanning: Regular dependency audits and SAST integration

Required Environment Variables

Documentation of sensitive configuration required for deployment. All values stored in .env.local (not committed to git).

Variable	Purpose	Required
`NEXT_PUBLIC_SUPABASE_URL`	Supabase project URL	Yes
`NEXT_PUBLIC_SUPABASE_ANON_KEY`	Public API key (client-side)	Yes
`SUPABASE_SERVICE_ROLE_KEY`	Admin operations (server-side only)	Yes
`OPENAI_API_KEY`	AI analysis features	Optional
`STRIPE_SECRET_KEY`	Payment processing	Yes
`STRIPE_WEBHOOK_SECRET`	Webhook signature verification	Yes
`CRON_SECRET`	Cron job authentication	Yes
`AI_FEATURES_ENABLED`	Toggle AI functionality	Optional
`DEV_BYPASS_AUTH`	Development mode (NEVER in production)	Dev only

Security Warning: Service role key and Stripe secret have full database access and payment authority. Never expose in client-side code or commit to version control.

Reporting Security Vulnerabilities

If you discover a security vulnerability in Succedence, please report it responsibly:

Contact

Email: evank8029@gmail.com

We'll acknowledge receipt within 48 hours and provide a timeline for resolution.

Please Include

• Description of the vulnerability
• Steps to reproduce
• Potential impact assessment
• Suggested remediation (if applicable)