What is the official website of Y Combinator ?

The official website of Y Combinator is http://www.ycombinator.com/.

What is Y Combinator's cybersecurity risk score?

Y Combinator has an AI-generated cybersecurity risk score of 777 out of 1000, indicating a Fair security posture according to Rankiteo's assessment.

How many security incidents has Y Combinator experienced?

According to Rankiteo, Y Combinator currently holds 0 security badges, indicating that no recognized compliance certifications are currently verified for the organization.

Has Y Combinator been affected by any supply chain cyber incidents ?

According to Rankiteo, Y Combinator has not been affected by any supply chain cyber incidents, and no incident IDs are currently listed for the organization.

Does Y Combinator have SOC 2 Type 1 certification ?

According to Rankiteo, Y Combinator is not certified under SOC 2 Type 1.

Does Y Combinator have SOC 2 Type 2 certification ?

According to Rankiteo, Y Combinator does not hold a SOC 2 Type 2 certification.

Does Y Combinator comply with GDPR ?

According to Rankiteo, Y Combinator is not listed as GDPR compliant.

Does Y Combinator have PCI DSS certification ?

According to Rankiteo, Y Combinator does not currently maintain PCI DSS compliance.

Does Y Combinator comply with HIPAA ?

According to Rankiteo, Y Combinator is not compliant with HIPAA regulations.

Does Y Combinator have ISO 27001 certification ?

According to Rankiteo,Y Combinator is not certified under ISO 27001, indicating the absence of a formally recognized information security management framework.

Which industry does Y Combinator operate in ?

Y Combinator operates primarily in the Venture Capital and Private Equity Principals industry.

How many employees does Y Combinator have ?

Y Combinator employs approximately 2,674 people worldwide.

Does Y Combinator own any subsidiaries ?

Y Combinator presently has no subsidiaries across any sectors.

How many LinkedIn followers does Y Combinator have ?

Y Combinator's official LinkedIn profile has approximately 1,216,517 followers.

What is the NAICS classification code for Y Combinator ?

Y Combinator is classified under the NAICS code 52391, which corresponds to Miscellaneous Intermediation.

Does Y Combinator have a Crunchbase profile ?

No, Y Combinator does not have a profile on Crunchbase.

Does Y Combinator have a LinkedIn profile ?

Yes, Y Combinator maintains an official LinkedIn profile, which is actively utilized for branding and talent engagement, which can be accessed here: https://www.linkedin.com/company/y-combinator.

How many cybersecurity incidents has Y Combinator experienced ?

As of July 22, 2026, Rankiteo reports that Y Combinator has not experienced any cybersecurity incidents.

How many peer or competitor companies does Y Combinator have ?

Y Combinator has an estimated 3,795 peer or competitor companies worldwide.

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Y Combinator

Boost Score +25 with badge (5 left)

777

/1000

Fair

802

/1000

Good

Y Combinator Vendor Cyber Rating & Cyber Score

ycombinator.com

Add Your Compliance Badge

Y Combinator is the leading startup accelerator for entrepreneurs. Since 2005, YC has invested in over 4,500 companies, including Airbnb, Dropbox, Stripe, Reddit, Instacart, DoorDash, and Coinbase. Today, YC has built the most powerful startup community in the world alongside the products and programs to support founders for the life of their company.

Y Combinator A.I CyberSecurity Scoring

Scoring History

Y Combinator

Y Combinator CyberSecurity News & History

Past Incidents

Attack Types

Entity

Type

Severity

Impact

Seen

Blog Details

Supply Chain Source

Incident Details

View

No data available

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A.I.

Y Combinator Company Scoring based on AI Models

Cyber Incidents Likelihood 3 - 6 - 9 months

Actual

Prediction

Incident Predictions locked

Access Monitoring Plan

A.I Risk Score Likelihood 3 - 6 - 9 months

Actual

Prediction A

Prediction B

Prediction C

Prediction D

A.I. Risk Score Predictions locked

Access Monitoring Plan

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Underwriter Stats for Y Combinator

Incidents vs Venture Capital and Private Equity Principals Industry Avg (This Year)

No incidents recorded for Y Combinator in 2026.

Incidents vs All-Companies Average (This Year)

No incidents recorded for Y Combinator in 2026.

Incident Types Y Combinator vs Venture Capital and Private Equity Principals Industry Avg (This Year)

No incidents recorded for Y Combinator in 2026.

Incident History - Y Combinator (X = Date, Y = Severity)

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SUBSIDIARY

Y Combinator Subsidiaries

Parent Company

Y Combinator

Venture Capital and Private Equity Principals

Website: http://www.ycombinator.com/

Company Size: 2,674

No subsidiary data available for this company.

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Y Combinator Similar Companies

Virgin

virgin.com

At Virgin, we’re all about creating unique customer experiences, challenging the status quo and championing people and the planet. For five decades, in five business sectors and on five continents, our purpose is to change business for good. The home of Virgin is Virgin Management – supporting the Branson family and the growth of the Virgin brand by developing and nurturing valuable Virgin businesses around the world. Virgin Management works alongside all the different Virgin companies and their teams around the world. We have interests spanning travel & leisure, health & wellness, music & entertainment, telecoms & media, financial services and space. Each of those individual Virgin businesses has its own ways of working, but we are all united by a shared culture and purpose. Virgin Management also works alongside Virgin Unite, the non-profit foundation of the Virgin Group, and is home to Virgin Start Up, a not-for-profit organisation that delivers Start Up Loans, mentoring and other support to entrepreneurs in the UK.

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NEWS

Y Combinator CyberSecurity News

Latest updates, reports, and threat intel affecting the global network.

January 21, 2026 03:35 PM

Asymmetric Security Launches with $4.2M to Shrink Cyber Forensic Costs by 10x

Asymmetric Security is betting the next big cybersecurity shift won't be a new firewall or endpoint agent, it'll be a faster, AI-native way to investigate.

Read Article

December 24, 2025 08:00 AM

Why is Y Combinator Investing in Indian AI Startups?

With an acceptance rate of just 1%, several Indian AI startups—focused on LLMOps, AI agents, cybersecurity, healthcare, robotics,...

Read Article

November 18, 2025 08:00 AM

Cybersecurity Startup Using AI Agents Raises $14M: Feroot Pitch Deck

Read the Series A pitch deck for Feroot, a Canadian cybersecurity startup that builds AI agents that scan code to ensure regulatory...

Read Article

October 22, 2025 07:00 AM

Cybersecurity for startups: How ContraForce empowers frontline teams

ContraForce uses Microsoft AI to help MSPs scale cybersecurity with automation and enterprise-grade protection. Learn more.

Read Article

October 17, 2025 07:00 AM

Theodosian raises $1.3M to scale enterprise data protection

Theodosian, UK-based cybersecurity startup, has raised $1.3 million in a pre-seed round led by Fuel Ventures, with participation from...

Read Article

October 14, 2025 07:00 AM

Security firms dispute credit for overlapping CVE reports

Cybersecurity company FuzzingLabs has accused the Y Combinator-backed startup, Gecko Security, of replicating its vulnerability disclosures...

Read Article

October 03, 2025 07:00 AM

Y Combinator joins $33m series A for cybersecurity firm Oneleet

Y Combinator joins $33m series A for cybersecurity firm Oneleet. Oneleet, a cybersecurity platform, has raised US$33 million in a series A round...

Read Article

October 03, 2025 07:00 AM

YC-backed Oneleet lands $33M to end ‘compliance theater’ in cybersecurity

Amsterdam-based cybersecurity startup Oneleet has secured $33 million in Series A funding led by Dawn Capital.

Read Article

October 03, 2025 07:00 AM

Cybersecurity firm Oneleet bags $33m Series A

Cybersecurity firm Oneleet secures $33m Series A led by Dawn Capital. Discover how it aims to end compliance theatre—read more now.

Read Article

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CVE

Latest

Global CVEs (Not Company-Specific)

CVE-2026-63261

SUMMARY

Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). A low-privileged authenticated user can send a specially crafted request to a Kibana machine learning feature, causing the server to exhaust available memory and become unavailable to all users.

Published

Date2026-07-21

Updated

Date2026-07-21

RISK INFORMATION (Score: 6.5)

cvss3

Base Score: 6.5

Complexity: LOW

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Impact Score

3.6

Exploitability

2.8

REFERENCES

https://discuss.elastic.co/t/kibana-8-19-19-9-3-8-9-4-4-security-update-esa-2026-72/388575

CVE-2026-63260

SUMMARY

Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated attacker with low-privilege access can trigger a denial of service condition in Kibana by sending a specially crafted, oversized request payload. Processing this user-supplied input requires resource-intensive memory allocation that can exhaust the available heap memory in the Kibana process, causing it to crash and become unavailable to all users.

Published

Date2026-07-21

Updated

Date2026-07-21

RISK INFORMATION (Score: 6.5)

cvss3

Base Score: 6.5

Complexity: LOW

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Impact Score

3.6

Exploitability

2.8

REFERENCES

https://discuss.elastic.co/t/kibana-8-19-19-9-3-8-9-4-4-security-update-esa-2026-71/388574

CVE-2026-63259

SUMMARY

Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana can lead to information disclosure via user-supplied identifiers that reference scheduled query result data from Kibana Spaces the requester is not authorized to access.

Published

Date2026-07-21

Updated

Date2026-07-21

RISK INFORMATION (Score: 4.3)

cvss3

Base Score: 4.3

Complexity: LOW

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Impact Score

1.4

Exploitability

2.8

REFERENCES

https://discuss.elastic.co/t/kibana-9-4-4-security-update-esa-2026-70/388573

CVE-2026-63145

SUMMARY

Incorrect Authorization (CWE-863) in Kibana can lead to integrity compromise of Machine Learning audit and notification records via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). A vulnerability exists in Kibana's Machine Learning functionality where a Machine Learning management endpoint performs an insufficient authorization check. The endpoint validates only a coarse privilege level but does not verify that the requesting user has access to the specific Machine Learning job or notification resources provided in the request. As a result, a low-privileged user with Machine Learning access in any Kibana space can manipulate Machine Learning audit and notification records for arbitrary jobs—including jobs in other spaces or belonging to other users—by leveraging Kibana's internally elevated credentials to write to restricted Machine Learning system indices that the user cannot access directly.

Published

Date2026-07-21

Updated

Date2026-07-21

RISK INFORMATION (Score: 4.3)

cvss3

Base Score: 4.3

Complexity: LOW

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Impact Score

1.4

Exploitability

2.8

REFERENCES

https://discuss.elastic.co/t/kibana-8-19-19-9-3-8-9-4-4-security-update-esa-2026-69/388572

CVE-2026-63144

SUMMARY

Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to denial of service via a specially crafted search request submitted by a low-privileged authenticated user. A user with read-level index access can submit a request that triggers unbounded recursive processing within the Elasticsearch query evaluation component, causing a fatal error that terminates the affected node. In single-node deployments, this results in complete service outage; in multi-node clusters, it causes repeated node restarts and sustained availability degradation.

Published

Date2026-07-21

Updated

Date2026-07-21

RISK INFORMATION (Score: 6.5)

cvss3

Base Score: 6.5

Complexity: LOW

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Impact Score

3.6

Exploitability

2.8

REFERENCES

https://discuss.elastic.co/t/elasticsearch-8-19-19-9-3-8-9-4-4-security-update-esa-2026-68/388571

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SBOM (Software Bill of Materials)Gain visibility into the software components used within an organization to detect vulnerabilities, manage risk, and ensure supply chain security.

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