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14,448 startups · 29 programs

Parameter

Active · AI pentesting, that works!

WebsiteYC profile

Why it ranks

How the rank works
12signal of 100 · rising 12
  • team of 14Team size · YC's directory+6.1
  • went through YCProgram · this site+4
  • hiringHiring · Titles (titles.fru.dev), YC+2

A sum of public facts, not a judgement and not investment advice.

Competitors

AIVeria LabsShared: pentesting, vulnerability, continuousYC F25San FranciscoStartup →AIGecko SecurityShared: critical vulnerability, work, verifyYC F24LondonStartup →AIHiroShared: work, agent, securityYC S23New York CityStartup →AIMindFortShared: pentesting, penetration, vulnerabilityYC X25Los AngelesStartup →AIPalisadeShared: vulnerability, find, securityYC S26San FranciscoStartup →
Companies closest to Parameter
Company
Veria LabsShared: pentesting, vulnerability, continuousYC F25ActiveAI
Gecko SecurityShared: critical vulnerability, work, verifyYC F24ActiveAI
HiroShared: work, agent, securityYC S23ActiveAI, Devtools
MindFortShared: pentesting, penetration, vulnerabilityYC X25ActiveAI, Devtools
PalisadeShared: vulnerability, find, securityYC S26ActiveAI

Adjacent

OtherClear ContractsShared: verify criticalAlchemist Class 34West Palm BeachStartup →AIOpenHackShared: pentesting, vulnerability, verifyYC F26San FranciscoStartup →AIRASPIREShared: pentesting, vulnerability, againstYC X26CairoStartup →AIvideogame.aiShared: agent work, infrastructurespeedrun SR002San FranciscoStartup →AICotoolShared: agent work, security, infrastructureYC X25San FranciscoStartup →
Companies next to Parameter
Company
Clear ContractsShared: verify criticalAlchemist Class 34Not statedOther
OpenHackShared: pentesting, vulnerability, verifyYC F26ActiveAI, Devtools
RASPIREShared: pentesting, vulnerability, againstYC X26 +1ActiveAI, Devtools
videogame.aiShared: agent work, infrastructurespeedrun SR002Not statedAI
CotoolShared: agent work, security, infrastructureYC X25ActiveAI

Also from W26 in AI

All of W26
AI/dev/fast/dev/fast is the AI-native code forgeYC W26San FranciscoStartup →AI10x ScienceThe AI-native platform for next-generation protein characterization.YC W26San FranciscoStartup →AI21stUI building blocks for the agentic internetYC W26San FranciscoStartup →AIAemonThe Forward-Deployed AI Research EngineerYC W26San FranciscoStartup →AIAgentic FabriqThe control plane for AI agents.YC W26San FranciscoStartup →AIAlt-XBuilding the best venue for private markets exposure.YC W26Los AngelesStartup →
Company
/dev/fast/dev/fast is the AI-native code forgeteam of 4ActiveAI, Devtools
10x ScienceThe AI-native platform for next-generation protein characterization.team of 5hiringActiveAI
21stUI building blocks for the agentic internetteam of 3ActiveAI, Devtools
AemonThe Forward-Deployed AI Research Engineerteam of 3hiringActiveAI, Devtools
Agentic FabriqThe control plane for AI agents.team of 2ActiveAI
Alt-XBuilding the best venue for private markets exposure.team of 2ActiveAI, Data

Founders

  • Ahmad KhanFounder/CEO
  • Huzaifa AhmadFounder/CTO
  • Prama YudhistiraFounder/CPO

About Parameter

Parameter builds AI agents that run continuous penetration tests against your apps and infrastructure. Instead of a once-a-year penetration test, Parameter's agents works 24/7 to find and verify critical vulnerabilities so you can prevent them before attackers. Formerly Hex Security

YC batch
W26 · Winter 2026
Status, per YC
Active
Category
AI
Team size
14
Location
San Francisco, CA, USA
Founded
2026
Checked
6h ago

Changes seen

One-linerOct 26, 2026

Rewrote its one-liner; it read "Security builds trust. Strengthen both, all on one platform."

Source ↗

Parameter in W26: 199 companies, 81% AI

LinkedIn

Parameter: questions

Which YC batch was Parameter in?

Parameter was in Y Combinator's Winter 2026 batch (W26).

Is Parameter still active?

Y Combinator lists Parameter as active.

Who founded Parameter?

Parameter's founders, as listed on its YC page: Ahmad Khan (Founder/CEO), Huzaifa Ahmad (Founder/CTO), Prama Yudhistira (Founder/CPO).

Where is Parameter based?

Parameter lists San Francisco, CA, USA as its location on YC's directory.