/Companies

Hiro

acquired by OpenAIYC S23

New York City, US · Founded 2023 · 2 employees · 4 known investors

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Hiro provides automated security reviews for code and infrastructure, identifying vulnerabilities and generating customer-ready security documentation. The platform serves developers and engineering teams who need to pass customer security assessments.

Also known as Santiago Labs, Inc. · Santiago Labs, Inc., Telophase · Telophase · hirosecure.com

Founders & leadership· Y Combinator alumni (S23)

Hiro was founded in 2023 by Ethan Blackburn and Daniel Schofield.

EBEthan Blackburn
Ethan BlackburnFounderFounder of Hiro, a platform that automates security reviews for code and infrastructure to help developers pass customer security assessments.
DSDaniel Schofield
Daniel SchofieldFounder

Investors · 4

Company profile

researched Aug 2026

Hiro develops software agents that carry out security and compliance engineering tasks for development teams rather than only reporting problems. The product covers three areas: SOC 2 and compliance, where Hiro takes failing monitors in compliance platforms such as Vanta and Drata and implements the underlying controls; vulnerability management, where it ingests findings from a customer's existing scanners, produces a fix, tests it and deploys it to production; and enterprise readiness, where it runs a continuous program of scanning, review of every code diff, and remediation of vulnerabilities against service-level agreements.

The company positions its approach against conventional scanners, compliance dashboards and AI compliance platforms, which it characterizes as generating additional alerts, tickets and evidence-collection work. Hiro's stated model is to close that work instead: enforcing controls through actual Terraform and API changes and pull requests, triaging alerts automatically so that only items needing human judgment surface, grounding questionnaire answers in the running infrastructure, and giving auditors commits, diffs and timestamps as evidence. Y Combinator describes the company more briefly as "agents that handle security work" and categorizes it under developer tools, B2B and infrastructure.

Business model

Hiro sells a security and compliance automation product to businesses, with self-service onboarding via a 14-day trial offered on its website.

Traction

The company's site names b.well, Conduit, OncoSource, Hyperscale and DB Utility as production users. Y Combinator lists the team size as two.

▸Full profile — market position, technology, go-to-market, geography, history

Market position

Hiro operates in the security and compliance automation space, positioning itself alongside and against compliance monitoring platforms such as Vanta and Drata as well as vulnerability scanners and AI compliance tools.

Rather than surfacing alerts, tickets and evidence requests for customers to work through, Hiro states that it executes the remediation itself, enforcing controls in infrastructure code and closing findings, with evidence generated as a by-product of the work performed.

Technology

Agentic software that integrates with compliance monitoring platforms (such as Vanta and Drata) and existing vulnerability scanners, then generates and tests remediations before deploying them. Controls are implemented as code through pull requests and Terraform and API changes, and continuous scanning plus review of each code diff produce evidence in the form of commits, diffs and timestamps.

Go-to-market

Engineering and security teams at companies that must satisfy SOC 2 and similar compliance regimes and meet the security expectations of enterprise buyers.

Geography

Headquartered in New York City, New York.

History

Hiro was founded in 2023 and participated in Y Combinator's Summer 2023 batch. It is based in New York City and lists Ethan Blackburn and Daniel Schofield as founders; Y Combinator also lists hirosecure.com as a company URL.

Compiled by commissioned research from 8 cited public sources — announcements, filings, and press listed under research sources below.

Key figures

latest reported
Team sizeJan 20232 people

Company-reported or press-reported figures, each dated to when it was claimed — not independently audited.

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Companies working in the same space as Hiro.

Legal entities · 1

corporate structure
Santiago Labs, Inc.

▸Research sources · 8

primary sources listed

8 public sources were cited for this profile; the first-party ones are listed here.

Frequently asked questions

What does Hiro do?
Hiro builds AI agents that perform security and compliance work, fixing vulnerabilities and implementing controls in code.
Who founded Hiro?
Hiro was founded by Ethan Blackburn, Daniel Schofield in 2023.
Who are Hiro's investors?
Hiro's investors include Y Combinator, Makers Fund, OurCrowd, Twenty Two Ventures.
Where is Hiro headquartered?
Hiro is headquartered in New York City, US.