Cybersecurity Startups

Quorum Cyber is a Microsoft-first global cyber security services provider offering managed risk and professional services. The company serves enterprise organizations seeking to improve their cyber security outcomes.

2 investors

RackWare provides a platform to assess, migrate, protect, and recover workloads across physical, virtual, cloud, and container environments, using file-system-based replication that avoids dependence on any specific hypervisor or cloud provider. It targets enterprise IT teams handling cloud migration, disaster recovery, and backup, with integrations for Oracle, IBM Cloud, Nutanix, Google Cloud, Azure, and SUSE.

2 investors

Ralio provides a trust and safety layer that sits between AI agents and existing payment rails, verifying agent identity and intent, enforcing spend limits and approval rules, and logging every transaction before money moves. It targets businesses automating B2B payments and works with bank rails, card networks, and stablecoins via an SDK, CLI, or MCP.

2 investors

Random Power develops true random number generators derived from silicon detector technology originally created for particle physics research at CERN. The company serves applications requiring high-quality random number generation, drawing on expertise from decades of detector development for fundamental science.

2 investors

RangeForce provides a cloud-based team training platform for cyber resilience exercises and cybersecurity skills development. The platform delivers realistic simulated environments for organizational team readiness, including solo technical labs and skills pathways.

2 investors

RASPIRE provides AI-powered runtime protection for mobile applications that operates at the post-compile stage without requiring source code modifications. It serves mobile development teams at banks, fintechs, and other high-risk organizations seeking fast deployment of security protections.

2 investors

Ravelin provides an AI-based fraud and abuse prevention platform for online merchants, using machine learning, consortium data, and graph-network analysis to automate risk decisions across the customer journey. Its offerings address refund abuse, account takeover, promo abuse, marketplace and partner fraud, 3D Secure authentication, and transaction optimization.

2 investors

Realm.Security develops an AI-native security data pipeline platform that helps enterprise security teams manage high log volumes, achieve unified visibility across data sources, and maintain detection and response capabilities without vendor lock-in.

2 investors

Redactive builds a browser-level prompt security layer that monitors employees' use of shadow AI tools like ChatGPT, Claude, and DeepSeek and applies customizable DLP rules to prevent sensitive company data from being shared in prompts. It targets enterprise security teams seeking visibility and control over unmanaged AI usage.

2 investors

REDLattice is a U.S.-owned defense technology company that develops cyber solutions and tools for the intelligence community, law enforcement, and military organizations. The company provides digital access capabilities, vulnerability identification, and offensive cyber operations tailored for classified and high-risk environments.

2 investors

Remedio provides a platform for enterprise security that automatically detects and remediates configuration drift, misconfigurations, vulnerabilities, and policy violations across endpoints, servers, and cloud environments. The platform also governs AI tools and shadow AI usage while enforcing continuous compliance across organizations.

2 investors

Rencore provides governance software for Microsoft Power Platform and Microsoft 365, giving IT and platform teams a single risk-ranked inventory of apps, flows, reports, dashboards and Copilot agents built by employees. It helps enterprises control oversharing, manage premium licensing costs, enforce ownership and lifecycle policies, and maintain compliance across low-code and no-code solutions.

2 investors

Reposify now redirects to CrowdStrike's External Attack Surface Management (EASM) product, which discovers and secures internet-facing assets by continuously mapping the internet and providing adversary-driven risk insights. It is delivered as part of the CrowdStrike Falcon platform, combining attack surface management with threat intelligence and vulnerability management for security and IT teams.

2 investors

Repscan is a legaltech company that detects, removes, and monitors negative or false online content — including photos, videos, personal data, news, and reviews — from search engines, social networks, and web portals. It offers a SaaS platform serving individuals, brands, agencies, SMEs, and large enterprises to manage and protect their online reputation.

2 investors

Rep Data's Research Defender provides pre-survey fraud prevention for market research teams, scanning and scoring each survey respondent against 130+ signals to block bots, VPN users, repeat fraudsters, and hyperactive respondents before they enter a questionnaire. It integrates with survey platforms such as Decipher, Qualtrics, Confirmit, and SurveyGizmo, and draws on external reputation databases and a shared fraudster suppression list to protect data quality.

2 investors

Resiliant provides passwordless, decentralized digital identity verification and access management using its patented IdNFT technology, which stores identity credentials on the user's own device via private permissioned blockchain rather than central servers. It serves enterprises and governments across finance, energy, healthcare, and government sectors with identity proofing, IAM/access control, and verification of non-human identities including devices and agentic AI.

2 investors

Resilience Insurance provides cyber insurance and technology errors & omissions coverage for enterprise clients across multiple industries. The company uses claims data analysis and cyber risk quantification to help organizations create data-backed security action plans and manage their cyber risk portfolios.

2 investors

Responsum provides a modular privacy management platform that automates governance policies, Records of Processing Activities (RoPA), Data Subject Requests, and Data Protection Impact Assessments (DPIAs) for organizations subject to data protection regulation. It serves privacy teams and DPOs, as illustrated by its work with Brussels Airport Company.

2 investors

Revo Capital is a venture capital firm focused on investing in early-stage technology startups with Turkish founders and/or R&D teams based in Turkey. The firm targets companies in fintech, B2B SaaS, cybersecurity, cloud operations, health tech, energy, and gaming sectors across Turkey, Eastern Europe, and the Baltics.

2 investors

Rhombus develops cloud-based physical security solutions for enterprises, offering security cameras and related services. The company serves organizations of any size seeking modern, accessible security infrastructure.

2 investors

Ridge Security develops an AI-powered platform for automated penetration testing and continuous threat exposure management that validates cyber risks for enterprises. The platform uses AI-driven attack simulations to identify vulnerabilities and assess security posture without requiring specialized staff.

2 investors

RiPSIM develops modern eSIM infrastructure technology to replace legacy SIM systems, serving the connectivity and telecommunications industry.

2 investors

Riptides provides identity, access control, and audit trails for AI agents and traditional workloads, enforcing security at the Linux kernel level so workloads receive short-lived, just-in-time credentials instead of holding long-lived API keys. It targets security and platform teams and integrates with existing secret stores, cloud IAM, and observability tools via SPIFFE, Kubernetes metadata, and federation with AWS and GCP.

2 investors

RISC Zero builds verifiable computation technology using zero-knowledge proofs, allowing anyone to cryptographically confirm that a computation's output is correct regardless of who ran it. It targets use cases such as proving financial transactions are performed correctly and compliantly while preserving privacy, and addressing trust gaps in software supply chains.

2 investors