Is Fly.io safe for production?
Get instant answers about your app's security.
Short Answer
Fly.io apps are production-capable, but "safe for production" is a binary dependent on verification: scanned and clean is safe, unscanned is not. The platform layer is fine; the application layer is where the question is actually decided.
Detailed Answer
Production readiness checklist for Fly.io
Not a generic checklist — this is what fails in Fly.io apps specifically and therefore what production readiness actually requires:
- **Secrets Config** — Check secrets management setup.
2. **Network Security** — Review private networking.
3. **App Security** — Analyze application security.
4. **Headers** — Verify security headers.
5. **RLS on every table** — Run `select tablename, rowsecurity from pg_tables where schemaname='public'` — any row with `rowsecurity=false` is a production blocker.
Go/no-go signal
Run a VAS scan. Zero critical + zero high findings = go. Any critical = absolute no-go. Any high = case-by-case depending on what data the app touches (a portfolio site ≠ a fintech app). This is a more reliable signal than "does it feel ready?" because feelings don't account for secrets synchronization across regions.
Security Research & Statistics
of Lovable applications (170 out of 1,645) had exposed user data in the CVE-2025-48757 incident
Source: CVE-2025-48757 security advisory
average cost of a data breach in 2023
Source: IBM Cost of a Data Breach Report 2023
developers using vibe coding platforms like Lovable, Bolt, and Replit
Source: Combined platform statistics 2024-2025
Expert Perspectives
“There's a new kind of coding I call 'vibe coding', where you fully give in to the vibes, embrace exponentials, and forget that the code even exists.”
“Vibe coding your way to a production codebase is clearly risky. Most of the work we do as software engineers involves evolving existing systems, where the quality and understandability of the underlying code is crucial.”
Check Your Fly.io App's Security
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Get Starter ScanMore Questions About This Topic
Can Fly.io apps scale for production workloads?
Performance scaling is a different question from security scaling. Fly.io's underlying infrastructure (postgres, supabase) handles substantial traffic. The scaling concern is that security issues compound at scale: a missing Row Level Security (RLS) policies entry exposes 100 records at a small app, 100,000,000 at a large one. Rate-limit gaps at scale become DoS amplifiers. Resolve the findings above before scaling, not after.
Do Fly.io apps meet SOC 2 or HIPAA requirements?
Not by default — and the platform's own SOC 2 status doesn't transfer. Compliance is app-level: you need audit logging on sensitive reads/writes, data encryption for PHI/PII fields beyond the default, access reviews, and documented incident response. Fly.io apps can meet SOC 2/HIPAA, but Fly.io doesn't ship you there — a security scan plus targeted compliance work does.
What's the single most important thing to do before launching a Fly.io app?
Run a VAS scan. This single step catches the majority of pre-launch issues in Fly.io apps — it's faster than any manual review, produces fixable output, and gives you a go/no-go answer in minutes. Every other pre-launch action (testing flows, reviewing env vars) is downstream of "did the scan pass?"
Explore Related Resources
More on Fly.io Security
Every angle of Fly.io security — from the specific findings we detect to step-by-step fixes.
Fly.io Security Scanner
Hub page: scan your Fly.io app for vulnerabilities.
Fly.io Security Risks
Specific risks we find in Fly.io apps, with real-world examples.
Fly.io Security Issues
Issues grouped by severity with detection and fix steps.
Fly.io Best Practices
Remediation playbook derived from Fly.io's actual failure modes.
Is Fly.io Safe?
Honest assessment of Fly.io's production readiness.
Fly.io Security Checklist
Pre-launch checklist covering every finding class for Fly.io.
How to Secure Fly.io Apps
Step-by-step hardening guide for Fly.io deployments.
Can Fly.io Apps Be Hacked?
Attack vectors specific to Fly.io and how they get exploited.