CISO Tribune

Vendor comparison · 2 companies

Data Theorem vs Promptfoo

Data Theorem sells application security products that secure code, mobile apps, APIs and cloud. Promptfoo builds open-source tools for secure, reliable AI applications. CISO Tribune files both under Static application security testing. This page sets the two records side by side: what each sells, where it is based, who owns and funds it, the customers it names and its recent news, each fact numbered to its source.

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  • Data Theorem
  • Promptfoo
Data Theorem vs Promptfoo: Products, Customers and Funding Compared
Data TheoremData Theorem sells application security products that secure code, mobile apps, APIs and cloud.datatheorem.comPromptfooPromptfoo builds open-source tools for secure, reliable AI applications.promptfoo.dev
What it sells
  • Mobile Secure[2][6][8]Automated security and privacy testing for every iOS and Android release.
  • Mobile Protect[2][3][7][13]Mobile Protect defends the app on the device.
  • Code SAST Secure[3][5][8][14][16]SAST, SCA and SBOM across every repo, in more than 20 languages.
  • API Secure[2][5][8][13][15]API Secure discovers every REST, GraphQL, gRPC, SOAP and serverless API.
  • Cloud Secure[2][5][8][16]Cloud Secure extends API Secure into the cloud your APIs and apps run on.
  • Red Teaming[2][4][5]Simulates real users to uncover application-specific vulnerabilities.
  • Evaluations[2][5]LLM evaluation of prompts and models that can run inside CI workflows.
Categories
Headquarters
Palo Alto, United States[1]San Francisco, United States[1][3]
Founded
Not stated on its pages2024[1][12]
Ownership and funding
Not stated on its pagesOwned by OpenAI[12]
Named customers
Not stated on its pagesNot stated on its pages
Recent news
  • June 30, 2026Data Theorem launched three AI security capabilities that together form a closed-loop platform covering exploit discovery, remediation, and runtime defense.[17]
  • March 9, 2026OpenAI agreed to buy Promptfoo, a startup helping businesses find and fix security issues in AI models during development.[13]
  • March 9, 2026OpenAI announced it has acquired Promptfoo, an AI security startup founded in 2024 to protect LLMs from adversarial attacks.[12]
G2 and Gartner Peer Insights
  • G2: listed, seen November 3, 2026[10]
  • Gartner Peer Insights: Not stated on its pages
  • G2: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
Who it fits
From its own pages, the company sells to teams that need to find every app, API and cloud resource, including the ones nobody told security about. It addresses teams that want to catch issues in code and the pipeline and hand auditors reports built from real scans. Game publishers are addressed with Mobile Protect for Gaming, which stops cheats, tampering and clones in the game.Not written yet
Last verified
September 27, 2026November 4, 2026

Where they overlap

  • Data Theorem and Promptfoo are both filed under Static application security testing.
  • Both are headquartered in the United States.

Where they differ, field by field

  • Data Theorem's primary category is API security; Promptfoo's is AI model and agent security.
  • Data Theorem is also filed under Mobile security and Cloud-native application protection (CNAPP). Promptfoo is also filed under AI firewalls and guardrails and Breach simulation and automated pen-testing.
  • Data Theorem lists Mobile Secure, Mobile Protect, Code SAST Secure, API Secure and Cloud Secure. Promptfoo lists Red Teaming and Evaluations.
  • Data Theorem is headquartered in Palo Alto, United States. Promptfoo is headquartered in San Francisco, United States.
  • Promptfoo was founded in 2024.
  • Promptfoo is owned by OpenAI.

What it sells: Data Theorem

What Mobile Secure does[2][6][8]
Mobile Secure provides automated security and privacy testing for every iOS and Android release. Mobile Secure signs in to your apps and tests every screen of every release.
What Mobile Protect does[2][3][7][13]
Mobile Protect blocks hooking frameworks, debuggers and re-signed copies inside the app. Mobile Protect scores every session and flags likely fraud to your team. Mobile Protect includes SSL pinning built on TrustKit.
What Code SAST Secure does[3][5][8][14][16]
Code SAST Secure scans your code and dependencies. Code SAST Secure secures your code, open source libraries and vendor SBOMs in one place. Code SAST Secure catches infrastructure as code misconfigurations in the repository, before they ship.
What API Secure does[2][5][8][13][15]
API Secure scores every operation on its own across authentication. API Secure probes your APIs from outside, then signs in as two different users. API Secure spots the abuse and tells the WAF you already run what to block.
What Cloud Secure does[2][5][8][16]
Cloud Secure covers the resources, roles and data behind the APIs. Cloud Secure runs the same IaC checks on what is deployed, and secures the containers and registry images your APIs and apps run on.

What it sells: Promptfoo

What Red Teaming does[2][4][5]
Promptfoo creates thousands of context-aware attacks tailored to the customer's application. The open-source Community version includes up to 10k probes per month at no charge.
What Evaluations does[2][5]
Promptfoo's LLM evaluation can be integrated into a CircleCI pipeline. Promptfoo can be integrated with test frameworks like Jest and Vitest to evaluate prompts as part of existing testing and CI workflows. Promptfoo provides real-time alerts and automated evaluations to show LLM security status across all projects.

Questions about Data Theorem and Promptfoo

What do Data Theorem and Promptfoo sell?
Data Theorem sells Mobile Secure, Mobile Protect, Code SAST Secure, API Secure and Cloud Secure. Promptfoo sells Red Teaming and Evaluations.
Are Data Theorem and Promptfoo in the same category?
They share Static application security testing. Data Theorem's primary category is API security and Promptfoo's is AI model and agent security.
Where are Data Theorem and Promptfoo headquartered?
Data Theorem is headquartered in Palo Alto, United States. Promptfoo is headquartered in San Francisco, United States.
When were Data Theorem and Promptfoo founded?
Promptfoo was founded in 2024.
Who owns Data Theorem and Promptfoo?
Promptfoo is owned by OpenAI.
Who are Data Theorem and Promptfoo sold to?
From its own pages, the company sells to teams that need to find every app, API and cloud resource, including the ones nobody told security about.
What have Data Theorem and Promptfoo announced recently?
June 30, 2026: Data Theorem launched three AI security capabilities that together form a closed-loop platform covering exploit discovery, remediation, and runtime defense. March 9, 2026: OpenAI agreed to buy Promptfoo, a startup helping businesses find and fix security issues in AI models during development.

About Data Theorem

Data Theorem sells application security products that secure code, mobile apps, APIs and cloud. Data Theorem describes itself as an application security company. Customers can start with one Data Theorem product and add the rest on the same portal.[2][3][8][11]

Since 2013, Data Theorem has focused on preventing AppSec data breaches across apps, APIs and the cloud behind them. Data Theorem's information security management system is certified to ISO/IEC 27001:2022 and independently audited every year.[11]

Mobile Secure provides automated security and privacy testing for every iOS and Android release. Mobile Secure signs in to your apps and tests every screen of every release. Mobile Protect defends the app on the device. Mobile Protect blocks hooking frameworks, debuggers and re-signed copies inside the app. Mobile Protect scores every session and flags likely fraud to your team. Mobile Protect detects the overlay and the automation, and blocks memory scraping. Mobile Protect includes SSL pinning built on TrustKit.[8][13]

Code SAST Secure covers SAST, SCA and SBOM across every repo, in more than 20 languages. Code SAST Secure scans your code and dependencies. Code SAST Secure secures your code, open source libraries and vendor SBOMs in one place. API Secure discovers every REST, GraphQL, gRPC, SOAP and serverless API. API Secure scores every operation on its own across authentication. API Secure probes your APIs from outside, then signs in as two different users. API Secure spots the abuse and tells the WAF you already run what to block.[3][8][13][14][15]

Cloud Secure extends API Secure into the cloud your APIs and apps run on. Cloud Secure covers the resources, roles and data behind the APIs. Cloud Secure runs the same IaC checks on what is deployed, and secures the containers and registry images your APIs and apps run on.[8][16]

AI Exploits find the chains attackers would use, AI Auto-Remediation hands the fix to your coding agent, and AI Active Protection blocks the attack until the fix ships. ARCANE, short for AI-analysis of Runtime Code Across Native Environments, thinks like an AI attacker. Audit-ready reports for SOC 2, ISO, PCI DSS, HIPAA, OWASP and more are built from the latest tests and scans.[3][4][8][9][16]

Data Theorem on the record

Sources

Data Theorem full record

  1. [1]Data theorem unveils code secure fully integrated ast product with sast sca and sbom management 302269428Data Theorem via PR Newswire · prnewswire.com · published October 8, 2024 · Tier A
  2. [2]datatheorem.comData Theorem · datatheorem.com · undated page, accessed September 27, 2026 · Tier A
  3. [3]Solutions | Data TheoremData Theorem · undated page, accessed October 24, 2026 · Tier A
  4. [4]DevSecOps: Security in Every Stage, From Code to Runtime | Data TheoremData Theorem · undated page, accessed October 24, 2026 · Tier A
  5. [5]Products | Data TheoremData Theorem · undated page, accessed October 24, 2026 · Tier A
  6. [6]Mobile SecureData Theorem · undated page, accessed October 24, 2026 · Tier A
  7. [7]Mobile ProtectData Theorem · undated page, accessed October 24, 2026 · Tier A
  8. [8]Data Theorem | AppSec | API Security | Cloud SecurityData Theorem · undated page, accessed October 24, 2026 · Tier A
  9. [9]ASPM: Application Security Posture Management | Data TheoremData Theorem · undated page, accessed October 24, 2026 · Tier A
  10. [10]Data Theorem Reviews 2026: Details, Pricing, & Features | G2G2 · undated page, accessed October 24, 2026 · Tier C
  11. [11]Regulatory Compliance | Audit-Ready Reports | Data TheoremData Theorem · undated page, accessed November 3, 2026 · Tier A
  12. [12]AI-Driven Application Security (AppSec) | Data TheoremData Theorem · undated page, accessed November 3, 2026 · Tier A
  13. [13]AI Runtime Protection for Apps and APIs | Data TheoremData Theorem · undated page, accessed November 3, 2026 · Tier A
  14. [14]Code SAST Secure: SAST, SCA, SBOM and AI Auto-RemediationData Theorem · undated page, accessed November 3, 2026 · Tier A
  15. [15]API Security Testing and Runtime Protection | API SecureData Theorem · undated page, accessed November 3, 2026 · Tier A
  16. [16]Cloud Security for APIs and Cloud-Native Apps | Cloud SecureData Theorem · undated page, accessed November 3, 2026 · Tier A
  17. [17]Data Theorem Launches the Industry’s First Closed-Loop AI Security PlatformData Theorem · published June 30, 2026 · Tier A

Promptfoo full record

  1. [1]PressPromptfoo · promptfoo.dev · undated page, accessed November 4, 2026 · Tier A
  2. [2]promptfoo.devPromptfoo · promptfoo.dev · undated page, accessed November 4, 2026 · Tier A
  3. [3]About Promptfoo | AI Security Experts | PromptfooPromptfoo · undated page, accessed November 10, 2026 · Tier A
  4. [4]Build Secure AI Applications | PromptfooPromptfoo · undated page, accessed November 10, 2026 · Tier A
  5. [5]Pricing | PromptfooPromptfoo · undated page, accessed November 10, 2026 · Tier A
  6. [6]Setting up Promptfoo with CircleCI | PromptfooPromptfoo · undated page, accessed November 10, 2026 · Tier A
  7. [7]Testing prompts with Jest and Vitest | PromptfooPromptfoo · undated page, accessed November 10, 2026 · Tier A
  8. [8]Finding LLM Jailbreaks with Burp Suite | PromptfooPromptfoo · undated page, accessed November 10, 2026 · Tier A
  9. [9]SharePoint Integration | PromptfooPromptfoo · undated page, accessed November 10, 2026 · Tier A
  10. [10]Langfuse integration | PromptfooPromptfoo · undated page, accessed November 10, 2026 · Tier A
  11. [11]AI Security for Real Estate | PromptfooPromptfoo · undated page, accessed November 10, 2026 · Tier A
  12. [12]OpenAI acquires Promptfoo to secure its AI agents | TechCrunchTechCrunch · published March 9, 2026 · Tier B
  13. [13]OpenAI Buying AI Security Startup Promptfoo to Safeguard AI Agents - BloombergBloomberg · published March 9, 2026 · Tier B

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