Key Takeaways
- Security hardening checklist for Laravel + Android SMS gateway: env secrets, least privilege, webhook signatures, OTP isolation, no PII in logs.
- Do not invent REST paths — Developer Center owns live fields.
- Bearer tokens never leave the server. Rotate on staff change.
- Idempotent webhook consumers; unknown DLR statuses fail closed.
- You bring the phone and operator SMS credit. We meter devices and send volume.
Hardening is gates, not slogans
Security hardening checklist for Laravel frameworks on an Android SMS gateway: protect keys, verify inbound webhooks, keep OTP out of shared logs, and treat the phone as production infrastructure. Hub: Laravel SMS gateway. Setup: device setup. Live fields: Developer Center.
A polished Filament panel with a key in APP_DEBUG dumps is still a breach waiting for a screenshot.
Laravel SMS security gates
| Gate | Owner | If skipped |
|---|---|---|
| Key only in env/vault | Eng | Repo leak or log scrape |
| Webhook signature verified | Eng | Forged DLR / inbound events |
| OTP bodies redacted in logs | Eng + SRE | Support tools become a code vault |
| OTP deviceIds isolated | Ops | Promo queue starves login |
| Rotate on staff change | Security | Ex-contractor still sends |
Keys and env
config/services.php reads env — never hardcode. External Laravel env docs: Laravel configuration. Acceptable use: acceptable use.
Webhooks and OTP
Verify signatures before mutating state. Idempotent jobs. OTP product lane: OTP verification. Send pattern: Laravel send SMS.
Cost
Devices plus SMS send volume. Operator airtime is yours. Security incidents do not refund carrier credit. Free: 1 device / 300 SMS lifetime. Starter, Professional, and Business list Unlimited SMS as platform send volume; that is not unmetered carrier SMS.
Checklist
- .env / vault only; .gitignore verified.
- Webhook HMAC + idempotent consumers.
- OTP/PII redaction in log channels.
- Rate limits on send endpoints; CSRF on panel forms.
- Key rotation runbook; OTP radios isolated.
Next steps
Laravel hub, devices and SMS volume, setup.
Related product pages
Jump to the live product docs for this topic—not another long-form article.
- SMS API documentationLive endpoint reference
- PHP REST send samplesPHP code examples
- device and SMS volume pricingPlans and allowances
- Security and Trust CenterCompliance and posture
