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    3. PromptArmor

    PromptArmor

    To protect organizations from the unique threats posed by AI systems like indirect prompt injection through comprehensive risk assessment and monitoring.

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    At a Glance

    1Tool Listed
    2Products
    13Tool Views
    6Capabilities
    Discussions
    San Francisco, CAHeadquarters
    2023Est.
    10Employees
    $500KRaised
    Focus Areas
    Compliance and Governance
    Threat Detection
    Application Security
    Latest News
    IBM's AI agent Bob easily duped to run malware: ResearchersJan 7, 2026
    'Claude For Excel' Gets Tricked Into Leaking SecretsNov 25, 2025
    Markets
    • Fortune 100
    • Healthcare
    • Legal
    • Financial Institutions
    • +1 more

    AI Tools by PromptArmor

    (1)
    View PromptArmor
    PromptArmor tool icon

    PromptArmor

    AI Risk Management Platform

    Compliance & GovThreat DetectionApp Security

    Discussions

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    Latest News

    01/07/2026

    IBM's AI agent Bob easily duped to run malware: Researchers

    The Register
    11/25/2025

    'Claude For Excel' Gets Tricked Into Leaking Secrets

    The Information
    08/21/2024

    Slack AI can leak private data via prompt injection

    The Register
    01/01/2026

    Claude Cowork Exfiltrates Files

    PromptArmor Research

    Products & Services

    2
    PromptArmor AI Risk Platform
    2024

    A comprehensive AI risk platform for TPRM, InfoSec, GRC, and Privacy teams to assess and monitor AI in third-party vendors.

    PromptArmor Transparency Platform
    2024

    A solution for AI transparency that automates model cards and visualizes AI data flows to accelerate security reviews.

    Market Position

    PromptArmor focuses on 'net-new' AI security challenges like indirect prompt injection, offering deeper technical expertise and specialized risk vectors compared to legacy shadow AI or DLP tools.

    Leadership

    Founders

    SK

    Shankar Krishnan

    Founder & CEO. Background in Data Science and Economics from UC Berkeley. Previously worked at Snappr (VP Product), Observe (Product), Tesla (Autopilot Data), and Accenture.

    VJ

    Vikram Jayanthi

    Founder & CTO. Background in Computer Science and Public Policy from UC Berkeley. Previously worked on infrastructure and security at Google, Roblox, and Symantec.

    Executive Team

    SK

    Shankar Krishnan

    CEO

    Deep expertise in product and data science from roles at Tesla, Observe, and Snappr.

    VJ

    Vikram Jayanthi

    CTO

    Strong technical background in security and infrastructure from roles at Google, Roblox, and Symantec.

    Board of Directors

    SK
    Shankar Krishnan
    Board Member
    VJ
    Vikram Jayanthi
    Board Member

    Founding Story

    The founders, security researchers and AI experts, came together with a singular mission to solve the net-new security problems that enterprises face when adopting AI, which are not addressed by traditional security tools.

    Business Model

    Revenue
    Grown to $1.0 million in 2024 (Reported)

    Revenue Model

    SaaS Subscription / API Usage

    Pricing Tiers

    Enterprise
    Custom / Book a Demo

    Tailored for enterprise security teams; includes role-based access, API access, SSO, and 24-hour support.

    Private

    Target Markets

    Industries & Segments
    • Fortune 100
    • Healthcare
    • Legal
    • Financial Institutions
    • Technology
    Use Cases
    • Third-Party Risk Management (TPRM)
    • Information Security (InfoSec)
    • Governance, Risk, and Compliance (GRC)
    • Legal and Data Privacy
    • Sales Acceleration/Security Assurance
    Notable Customers
    • Dropbox
    • Hubspot
    • Procore

    Quick Facts

    Headquarters
    San Francisco, CA
    Founded
    2023
    Entity Type
    Inc.
    Employees
    10
    Total Funding
    $500K
    Investors
    Y Combinator, Afore Capital
    Office Locations
    San Francisco

    Funding History

    Seed Round (YC W24)$500,000
    Feb 2024
    Y Combinator
    Afore Capital
    Pioneer Fund

    History & Milestones

    Jan 2026

    Released research on IBM's Bob AI agent and Anthropic's Claude Cowork vulnerabilities.

    Nov 2025

    Released research on Claude for Excel vulnerabilities.

    Jan 2024

    Official launch of PromptArmor to help organizations monitor AI risk in vendors.

    Feb 2024

    PromptArmor joined the Y Combinator Winter 2024 (W24) batch.

    Aug 2024

    Discovered and disclosed significant data exfiltration vulnerabilities in Slack AI via prompt injection.

    Key Capabilities

    6
    Identify AI usage in vendors
    Assess AI across 26 risk vectors
    Monitor AI scope and permissions changes
    Map AI data flows to frameworks (NIST, OWASP, MITRE)
    Automated AI model cards
    CRM Integration (Salesforce, Hubspot)

    Integrations & Partnerships

    Platform Integrations

    • Slack
    • Writer.com
    • Anthropic
    • Google
    • Hubspot
    • Salesforce

    Key Partnerships

    Y Combinator

    Connect

    Website
    promptarmor.com

    AI Topics

    3

    PromptArmor focuses on these topics:

    Compliance and Governance(1)
    Threat Detection(1)
    Application Security(1)
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