Cybersecurity Startups

RAAD offers a risk resiliency platform aimed at helping organizations achieve ongoing operational resiliency.

2 investors

Rapid Ascent offers an interactive enterprise training platform that simulates real-world cybersecurity environments for professionals to develop and demonstrate hands-on skills in roles like SOC analyst, threat hunter, and penetration tester. The platform provides industry-specific training scenarios across critical infrastructure, finance, healthcare, and aerospace sectors, with AI-guided learning paths and employer-verified skill assessments.

2 investors

Ray Security offers a platform that discovers and controls AI tools — including copilots, agents, and LLMs, whether sanctioned or shadow — that access an organization's data, and automatically remediates unnecessary exposure. It continuously monitors AI interactions with sensitive data and blocks abnormal activity to reduce data-security risk.

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

RealNetworks develops AI-powered facial recognition technology (SAFR) for security professionals, along with video playback and gaming products for consumer devices. Its offerings span computer vision security tools and media/entertainment software.

2 investors

ReasonLabs offers an all-in-one online security platform, powered by AI, that protects consumers and their families from scams, fraud, malware, and cyber threats. Its features include dark web identity monitoring, EDR-based antivirus protection, VPN privacy, anti-phishing tools, ad blocking, and parental controls.

2 investors

Reclaim Security offers an AI "security engineer" that autonomously discovers security exposures, plans validated remediations, and executes fixes across an organization's existing security tools. It targets enterprise security teams, integrating with 40+ security platforms to close the gap between detection and remediation in the cybersecurity market.

2 investors

Redactable provides AI-powered document redaction software that detects and permanently removes sensitive data (PII, PHI, financial information) and hidden metadata from PDFs, images, and scanned documents. It offers team collaboration, OCR, Bates numbering, audit-ready redaction certificates, and SOC 2 Type II / HIPAA compliance for organizations handling sensitive records.

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

Remediant developed SecureONE, a privileged access management (PAM) security product, which is now offered as Netwrix Privilege Secure for Discovery following Remediant's acquisition by Netwrix.

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

Repello provides autonomous red teaming and security testing for AI applications and agents, detecting vulnerabilities through adversarial attack simulation combined with human-like interaction testing. The platform offers multi-stage exploit validation, compliance mapping, and domain-specific attack scenarios for organizations deploying AI systems.

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

Resiliant provides identity verification for loan companies and pawn stores using a cryptographic identity token (IdNFT) stored on customer phones, replacing paper ID and manual checks across online and in-store touchpoints. The solution enables fraud prevention, regulatory compliance, and faster customer service with device-based, auditable verification.

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

revel8 provides security awareness training that simulates real-world cyber attacks with role-specific scenarios to help employees identify threats, and delivers insights to improve organizational security. It targets European enterprises with an emphasis on regulatory compliance including GDPR, DORA, and NIS-2.

2 investors

ReversingLabs provides a cybersecurity platform for software supply chain and file security, analyzing and deconstructing software binaries to detect risks. It serves enterprises including Fortune 500 companies and cybersecurity vendors across software, banking, defense, retail, and insurance sectors, with its Spectra Core tracking over 40 billion searchable files daily.

2 investors

Rhebo provides OT (operational technology) security solutions, with a focus on protecting critical infrastructure such as water supply and wastewater systems from cyber threats. Its offerings target industrial and utility operators seeking to monitor and secure their operational networks.

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

Rhombus offers a cloud-managed physical security platform that combines enterprise-grade hardware with software for monitoring, AI-powered video search, and automated workflows. It serves organizations across sectors including retail, technology, education, and housing authorities, with an emphasis on interoperability and cybersecurity.

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