How Holdyn Keeps Your Money Safe: Security Architecture Explained

Holdyn · Apr 8, 2026 · 5 min read

Security

5 min read

When you trust a platform with your money, you deserve to know exactly how it’s protected. Here’s a transparent look at Holdyn’s security architecture — no marketing fluff, just the technical reality.

Frequently Asked Questions

Is Holdyn SOC 2 compliant?

Holdyn operates on Stripe’s infrastructure, which is SOC 2 Type II compliant and PCI DSS Level 1 certified. All fund custody happens through Stripe — not through Holdyn’s own systems — so the security guarantees of Stripe apply directly to every transaction.

What happens to my money if Holdyn shuts down?

Because funds are held by Stripe (not Holdyn), a Holdyn outage wouldn’t affect the custody of your money. Stripe is a licensed money transmitter with its own regulatory obligations. In the unlikely event of a platform-level issue, funds would remain in Stripe custody and be returned to the correct party.

How is my personal data protected?

All personal data is encrypted in transit (TLS 1.3) and at rest (AES-256). Passwords are hashed with bcrypt-12. Payment card data is never stored on Holdyn servers — it goes directly to Stripe via their tokenized flow. Identity verification documents are handled by Stripe Identity with their enterprise-grade security.

Can I enable 2FA on my account?

Yes. Two-factor authentication via TOTP (Google Authenticator, Authy, 1Password, or any standard TOTP app) is available on all accounts. For high-value transactions, enabling 2FA is strongly recommended — it prevents account takeovers even if your password is compromised.

What happens if someone tries to take over my account?

Multiple layers kick in: rate limiting blocks brute-force attempts, JWT version pinning invalidates sessions on password changes, and suspicious activity triggers email alerts. If an attacker got your password (which is bcrypt-12 hashed and nearly impossible to reverse), 2FA would block them at login.

TL;DR — Security Stack

Stripe-powered infrastructure — PCI DSS Level 1, SOC 2 Type II
Multi-layer authentication — bcrypt-12, 2FA/TOTP, JWT version pinning
Transaction safeguards — idempotency keys, atomic operations, Redis locks
Identity verification — Stripe Identity KYC with sanctions screening
Built-in dispute resolution — evidence-based mediation within 30 days

Stripe-Powered Infrastructure

Holdyn doesn’t hold your money directly. All funds flow through Stripe, one of the world’s largest and most trusted payment processors. Stripe is:

PCI DSS Level 1 certified (the highest level of payment security)
SOC 2 Type II compliant
Trusted by companies like Amazon, Google, and Shopify
Licensed as a money transmitter where required

When funds are “held held by the platform” on Holdyn, they’re actually held in Stripe’s secure infrastructure — not in a Holdyn bank account. Your money has the same level of protection as any payment processed by a Fortune 500 company.

Security Stack

Layer	Technology	What It Prevents
Password Storage	bcrypt-12 hashing	Password theft even if database is compromised
Login Security	2FA via TOTP (Google Authenticator / Authy)	Unauthorized access with stolen passwords
Session Management	JWT with version pinning + HttpOnly cookies	Session hijacking and XSS token theft
Payment Integrity	Idempotency keys + atomic DB operations	Duplicate charges and partial fund movements
Concurrency	Redis distributed locks	Race conditions on simultaneous operations
Rate Limiting	16+ endpoint-specific limits (fail-closed)	Brute force attacks and API abuse

Identity Verification

Holdyn uses Stripe Identity for KYC (Know Your Customer) verification. When you verify your identity:

Your government ID is verified against your selfie using AI
Sanctions lists and PEP (Politically Exposed Persons) databases are checked
Verified users receive a blue badge visible to counterparties
Verification happens at the moment of action (not at signup), reducing friction

What Happens If Something Goes Wrong?

Every transaction has a built-in dispute resolution process:

Either party can file a dispute within 30 days of a payment event.
Evidence is submitted by both sides through the platform.
An admin reviews the case based on the transaction terms and evidence.
A resolution is issued — full release, partial release, or refund.

Because funds are held by the platform (not already sent), the platform can actually enforce the resolution. This is the critical advantage over credit card chargebacks — the process is transparent and fair to both parties.

Transparency Is the Point

Security shouldn’t be a black box. Every layer described above is built into Holdyn’s production system — not a roadmap item, not a marketing claim, but deployed, tested, and protecting real transactions today.