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Overview
Walrus Security provides a B2B fintech platform that secures push payments through authentication technology. Its main product, DoubleCheck, helps financial-sector clients securely collect payment details for transactions involving wires and stock, aiming to reduce electronic impersonation fraud while keeping the process smooth for users. The company serves funds, fund administrators, fundraising platforms, and exchanges, and has processed over $6 billion in transaction volume, signaling trust and adoption in its niche. Unlike broader payment-security tools, Walrus Security concentrates on preventing impersonation fraud in payment details and frictionless collection for high-risk payment workflows. The goal is to minimize fraud risk and operational friction for institutions handling sensitive payment data.
About Walrus
Industries
Enterprise Software
Fintech
Cybersecurity
Financial Services
Company Size
11-50
Company Stage
Seed
Total Funding
$4.5M
Headquarters
New York City, New York
Founded
2019
Simplify's Take
What believers are saying
- Processed over $6 billion in transactions with $1 trillion AUM clients.
- Integrates seamlessly with treasury, bank, and ERP workflows.
- Outperforms email and callbacks using multiple identity signals.
What critics are saying
- Deepfake voice cloning bypasses out-of-band calls in 6-12 months.
- Plaid and Stripe integrations capture market share immediately.
- FedNow's fraud detection obsoletes DoubleCheck in 18-24 months.
What makes Walrus unique
- DoubleCheck authenticates counterparties before accepting payment details.
- Nacha Preferred Partner for ACH fraud prevention since April 8, 2026.
- Transaction guarantee protects against BEC and impersonation fraud.
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Funding
Total Funding
$4.5M
Above
Industry Average
Funded Over
1 Rounds
Industry standards
Benefits
Health Insurance
Dental Insurance
Vision Insurance
Parental Leave
401(k) Retirement Plan
401(k) Company Match
Relocation Assistance
Unlimited Paid Time Off
Company Equity
Growth & Insights and Company News
6 month growth
↓ -6%1 year growth
↓ -6%2 year growth
↓ -6%Walrus Security is now a Nacha Preferred Partner. Michael Walfish April 8, 2026 Walrus Security, Inc. is excited to be a Nacha Preferred Partnerfor Account Validation, Fraud Monitoring, and Risk and Fraud Prevention. Nacha governs the ACH Network, setting standards and rules for the payment system that facilitated over 35 billion payments in 2025. Payment fraud starts before a transaction reaches the ACH Network. Attackers manipulate payment instructions upstream, when account details are being exchanged. DoubleCheck helps organizations authenticate their counterparties before accepting payment details, stopping fraud where it starts and maintaining the integrity of the ACH Network. Read the full article from Nacha: Nacha Announces Walrus Security as a Preferred Partner for Account Validation, Fraud Monitoring, and Risk and Fraud Prevention
The startup said, it plans to utilise the funding to expand its team and enhance product features.
Walrus is Hiring for 5 Jobs on Simplify!
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About Walrus
Industries
Enterprise Software
Fintech
Cybersecurity
Financial Services
Company Size
11-50
Company Stage
Seed
Total Funding
$4.5M
Headquarters
New York City, New York
Founded
2019
Walrus is Hiring for 5 Jobs on Simplify!
Find jobs on Simplify and start your career today