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Rain Capital

425 Tasso Street, Palo Alto, CA, 94301, United States

Overview

Rain Capital is an early-stage venture capital fund focusing on transformative technologies in the cybersecurity, ai, and analytics space. It is also committed to discovering, fostering, and supporting the next generation of women entrepreneurs.

Total investments
16
Lead investments
0
Investments · 12mo
3
Active investors
4

Sector focus

  • Analytics
  • Artificial Intelligence (AI)
  • Cyber Security
  • Venture Capital
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Investment portfolio

  • Straiker

    Participated · Series A · Jun 2026

    Straiker provides an agentic-native security platform with three integrated capabilities: comprehensive discovery of AI agents across enterprise environments, pre-deployment adversarial testing to surface vulnerabilities, and runtime protection that monitors activity and stops threats. The founding team includes veterans of Palo Alto Networks and AI/security research, and the company emphasizes a shared intelligence layer that uses production detections to strengthen testing and protections. Since launching in 2025, Straiker has become a partner to frontier AI labs and Fortune 500 enterprises and reports run-rate revenue growth of more than 15x in less than a year. Straiker operates STAR Labs, its dedicated AI threat research arm, which informs its defenses and provides early visibility into emerging attack techniques.

  • Clario

    Participated · Seed · Jun 2026

    Clario’s platform connects into enterprise file and content systems such as Google Drive, SharePoint, OneDrive, Box, and Confluence to scan metadata and surface redundant, obsolete, and trivial files. When files are flagged, Clario triggers intelligent workflows via Slack and Teams that prompt customers to keep, archive, or delete items, and the company reports it only gets paid when customers make one of those decisions. Over time the product learns from customer decisions to build an autonomous system that routinely cleans and maintains unstructured data. The company says it has engaged with hundreds of enterprises and is already working with several marquee organizations; early customer analysis reportedly uncovered terabytes of garbage data across multiple environments. Clario’s founders bring enterprise operating and engineering backgrounds including a five-time CIO and an engineering leader with experience at Oracle, NetApp, Nutanix, and VMware. The company is based in Menlo Park, California.

  • Manifold

    Participated · Seed · Mar 2026

    Manifold builds an AI Detection & Response (AIDR) and Governance platform for agentic enterprise environments. Its solution secures endpoints, monitors agent behavior at runtime, detects threats in real time, and gives security teams visibility and context to investigate and respond. The platform provides full runtime visibility into agent actions, the tools they call, systems they access and connections to MCP servers, databases and external systems, with anomalies flagged when behavior drifts. The company plans to use its recent seed funding to accelerate development of the AIDR platform and enable enterprises to safely adopt agentic AI at scale. Manifold was co-founded by Neal Swaelens, Oleksandr Yaremchuk and Michael McKenna and is based in San Diego, CA.

  • SplxAI

    Participated · Seed · Mar 2025

    SplxAI offers a platform built to automate offensive security testing, dynamic remediation, and continuous monitoring for agentic AI and LLM-powered applications. The platform simulates adversarial scenarios across modalities including text, images and voice, leveraging a continuously updated attack database. SplxAI also published an open-source tool, Agentic Radar, to map dependencies and expose missing security measures in agentic workflows. The company emphasizes automated red teaming to find prompt injections, hallucinations, and other AI-specific vulnerabilities that manual testing cannot scale to address. Named customers include KPMG, Infobip, Brand Engagement Network, and Glean. SplxAI was founded in 2023, is based in Dover, Del., and has reported 127% quarter-over-quarter growth since launching the platform in August 2024. SplxAI is a London, UK-based cybersecurity company focused on safeguarding AI applications and chatbots for enterprises, startups, and scaleups. Its flagship product, Probe, is an advanced security platform designed to support CISOs within large enterprises by identifying vulnerabilities in AI chatbots and providing immediate protection. The company employs a dual approach of both attacking and defending chatbots to detect and mitigate AI threats such as prompt injection, social engineering, off-topic conversations, jailbreaks, and more. Led by CEO Kristian Kamber, SplxAI raised $2M in pre-seed funding to accelerate development of Probe. The company offers cybersecurity services tailored to large enterprises' security teams as well as smaller organizations and scaleups.

  • Tuskira

    Participated · Equity · Dec 2024

    Tuskira builds a platform to aggregate and optimize fragmented security tools, surfacing exploits and misconfigurations across code, cloud environments, applications, and infrastructure. The company aims to reduce attacker dwell time and proactively strengthen defenses rather than address threats in isolation. Tuskira targets enterprise customers across finance, healthcare, technology, and government, and emphasizes improved monitoring and measurable security posture improvements. The founding team—Piyush Sharma, Vipul Parmar, and Om Moolchandani—previously founded Accurics, which was acquired by Tenable in 2021. San Francisco-based Tuskira operates at roughly a 50-person scale and has been emerging out of stealth. The company plans to advance its AI technology, expand integrations, and enhance customer onboarding using newly raised capital.

Team

  • Chenxi Wang

    Managing General Partner

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  • Amena Zhang

    Partner

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  • Charisee Castagnoli

    Venture Partner

  • David B. Cross

    LLP Partner

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