HighFile-scopeC# Plug & play

Require HTTPS and HSTS with Data Protection keys

Use app.UseHsts(); app.UseHttpsRedirection(); store DataProtection keys in Azure Key Vault or KMS with rotation.

Why this matters

TLS and managed keys satisfy SOC 2 encryption requirements.

Side-by-side examples engineers can pattern-match during review.

Avoid

app.UseRouting(); // no HTTPS or HSTS

Prefer

app.UseHsts(); app.UseHttpsRedirection(); services.AddDataProtection().PersistKeysToAzureBlobStorage(blob) /* or KeyVault /;

Good

app.UseHsts();

Bad

app.UseDeveloperExceptionPage(); // in production

From the same buckets as this rule.

Critical
Encrypt sensitive data at rest with KMS and rotate keys
Use envelope encryption (AES-256-GCM) with cloud KMS-managed CMKs for databases, object storage, and backups. Rotate CMKs at least annually and rotate DEKs per object/file.
compliance-soc2-essentialssecrets-credentials+1
Critical
Enforce TLS 1.2+ and HSTS on all external endpoints
Public services must require TLSv1.2 or higher and set HSTS (max-age ≥ 15552000, includeSubDomains). Reject plaintext HTTP and weak ciphers; cookies must be Secure and HttpOnly with SameSite set.
compliance-soc2-essentialssecurity-hardening+1
Critical
Use a secrets manager and 90-day rotation policy
All credentials (API keys, DB passwords, tokens) must be stored in a secrets manager with automatic rotation ≤ 90 days; forbid hardcoded or .env-committed secrets via CI checks.
compliance-soc2-essentialssecrets-credentials+1