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14,448 startups · 29 programs

Sublime Black

Inactive · Automating Cyber Security Incident Response Through Artificial…

WebsiteYC profile

Why it ranks

How the rank works
1signal of 100 · rising 0
  • went through YCProgram · this site+4

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

Competitors

OtherAcquiredCymmetriaShared: incident response, cyber security, cybersecurityYC S15Tel Aviv-YafoStartup →OtherAcquiredTelivyShared: cyber security, cybersecurityYC S21San FranciscoStartup →AIAsymmetric SecurityShared: incident responseEF 2025LondonStartup →AIContraForceShared: incident response, securityYC S21McKinneyStartup →AIRootlyShared: incident responseYC S21San FranciscoStartup →
Companies closest to Sublime Black
Company
CymmetriaShared: incident response, cyber security, cybersecurityYC S15AcquiredOther
TelivyShared: cyber security, cybersecurityYC S21AcquiredOther
Asymmetric SecurityShared: incident responseEF 2025Not statedAI
ContraForceShared: incident response, securityYC S21ActiveAI
RootlyShared: incident responseYC S21ActiveAI, Devtools

Adjacent

AIRelvy AIShared: incident responseYC F24San FranciscoStartup →AIPromptArmorShared: cybersecurityYC W24San FranciscoStartup →OtherStealth WorkerShared: cyber securityYC W16San FranciscoStartup →OtherTrilliumShared: cyber securityPlug and PlayJapanStartup →Developer toolsAvataoShared: incident response, cybersecurity500 Global 2018HungaryStartup →
Companies next to Sublime Black
Company
Relvy AIShared: incident responseYC F24ActiveAI, Devtools
PromptArmorShared: cybersecurityYC W24ActiveAI
Stealth WorkerShared: cyber securityYC W16ActiveOther
TrilliumShared: cyber securityPlug and Play Not statedOther
AvataoShared: incident response, cybersecurity500 Global 2018Not statedDevtools

Also from W19 in AI

All of W19
AIMedCryptMedCrypt gives medical device vendors cybersecurity features in a few…YC W19San DiegoStartup →AI1910Multimodal AI Platform for Modality Agnostic Drug Discovery™YC W19BostonStartup →AIAcquiredAccept.inc (formerly BoardRE)BoardRE is a new type of mortgage company that upgrades any offer…YC W19DenverStartup →AIAccioJobOffline-first tech skilling and placement for IndiaYC W19GurugramStartup →AIAI InsuranceAI Insurance is the platform that runs insurance companiesYC W19New York CityStartup →AIAllSome FulfillmentFulfillment platform to build Southeast Asia e-commerce operationsYC W19Kuala LumpurStartup →
Company
MedCryptMedCrypt gives medical device vendors cybersecurity features in a few…team of 16ActiveAI
1910Multimodal AI Platform for Modality Agnostic Drug Discovery™team of 20ActiveAI
Accept.inc (formerly BoardRE)BoardRE is a new type of mortgage company that upgrades any offer…team of 80acquiredAcquiredAI
AccioJobOffline-first tech skilling and placement for Indiateam of 120ActiveAI
AI InsuranceAI Insurance is the platform that runs insurance companiesteam of 16ActiveAI
AllSome FulfillmentFulfillment platform to build Southeast Asia e-commerce operationsteam of 18ActiveAI

About Sublime Black

YC batch
W19 · Winter 2019
Status, per YC
Inactive
Category
AI
Checked
7h ago

YC tags: Cybersecurity, Enterprise, AI

Changes seen

TagsOct 19, 2026

Newly tagged AI; no longer tagged Artificial Intelligence.

Source ↗

Sublime Black in W19: 194 companies, 27% AI

Sublime Black: questions

Which YC batch was Sublime Black in?

Sublime Black was in Y Combinator's Winter 2019 batch (W19).

Is Sublime Black still active?

Y Combinator lists Sublime Black as inactive.