Cybersecurity Startups

Steryon provides cybersecurity solutions designed to optimize threat response and defense operations without disrupting business workflows. The company serves organizations seeking to integrate security measures seamlessly into existing operational systems.

1 investor

Stirling PDF is an open-source PDF processing platform that provides editing, classification, and automation tools for individual and enterprise-scale document workflows. It offers private, on-premise deployment options and is trusted by 75% of the Fortune 500.

1 investor

StirlingX is a technology and operations company founded by veterans of UK military and intelligence units, emphasizing reliable systems, operational discipline, and rigorous security. The page describes the founders' background and approach but does not specify a concrete product or target customer.

1 investor

Stitchflow is a managed IT automation service that maps a company's app stack and builds and runs custom workflows for tasks like user onboarding, offboarding, license management, and access reviews. It connects to apps through 60+ API integrations plus a local browser agent for apps without management APIs, and joins app and user data with financial records to surface shadow IT and unused spend.

1 investor

StoneLock designs and manufactures near-infrared facial recognition access control systems. The company is a woman-owned business based in the United States and focuses on providing data privacy-respecting security solutions.

1 investor

StoneTurn is a professional services firm providing forensic investigations, intelligence analysis, and compliance support for organizations navigating regulatory inquiries, litigation, and internal misconduct cases. The firm serves corporate clients, regulatory bodies, and law enforcement through multidisciplinary teams of forensic accountants, cybersecurity experts, and investigators.

1 investor

Gravity is an industrial-grade digital tethering device that physically secures master keys and access cards and alerts workers when keys move beyond a set perimeter, aiming to prevent key loss events. It targets property and facility management firms responsible for buildings and multi-tenant high-rises where re-keying after a loss is costly.

1 investor

Straddle builds an identity-first API platform for account-to-account payments that integrates open banking, fraud detection, and multi-rail money movement. The platform enables businesses to embed fast, cost-effective bank-to-bank payment capabilities into their applications.

1 investor

The company builds tools for incident response and digital forensics professionals. Strand was created to serve people conducting regulatory investigations and incident response work who previously lacked adequate tools.

1 investor

SIG is a consulting firm that works with colleges and universities to optimize their institutional systems and processes. The company provides strategic advisory, implementation, and technical services for higher education technology platforms.

1 investor

StrataVision develops an AI-powered computer vision platform that analyzes on-site operations to provide insights for retail and enterprise customers. The platform enables businesses to optimize operational efficiency, improve customer experiences, and make data-driven decisions across physical locations.

1 investor

Strato Cloud builds an AI-powered cloud operations platform that helps enterprises manage multi-cloud infrastructure with automated governance, remediation, and secure access controls. The platform targets organizations operating AWS, Azure, or Google Cloud who need simplified cloud operations with improved security and compliance.

1 investor

Streamdal provides code-native data privacy controls embedded directly in application code to detect and prevent personally identifiable information (PII) from being exposed in databases, data streams, or pipelines. The platform offers real-time data validation and privacy enforcement for applications across multiple programming languages.

1 investor

Strike Graph provides an AI-native governance, risk, and compliance (GRC) platform that automates security compliance processes for organizations of all sizes. The company's platform includes tools for evidence validation, compliance guidance, and third-party risk management across multiple certification frameworks including SOC 2, ISO 27001, and HIPAA.

1 investor

StrikeReady offers an AI-powered security operations center (SOC) platform built on what it calls Composite AI, combining deterministic engines with generative reasoning to investigate every security alert across threat intelligence, exposure management, the alert lifecycle, and defense validation. It integrates with over 400 existing security tools and serves SOC analysts, managers, and CISOs, with cloud, hybrid, and on-premise deployment options for regulated and government buyers.

1 investor

Strobes is an exposure management platform that consolidates vulnerability scanning, validation, and remediation across a unified interface. It serves enterprise security teams by automating the full risk assessment lifecycle with AI agents that verify exploitability and orchestrate fixes across fragmented tool stacks.

1 investor

Provides fully containerized, cloud-native (Linux) and OS-specific development environments that developers can self-provision in seconds, with zero-trust access control, data-leak prevention, and policy enforcement. Aimed at enterprise EUC, IT, DevOps, and platform engineering teams supporting internal and remote developers.

1 investor

StrongestLayer is an AI-native email security platform that uses a multi-LLM engine (TRACE) to analyze the intent, sender, and infrastructure behind emails and detect phishing that bypasses traditional signature-based filters. It deploys via API to Microsoft 365 and Google Workspace and delivers pre-investigated, explainable verdicts for security operations teams.

1 investor

Strongkeep is a Singapore-based cybersecurity provider serving small and mid-sized businesses. It packages protection for companies that lack in-house security staff, large budgets, or technical expertise.

1 investor

Subconscious Compute builds compact neural network models and an inference engine that run directly on edge hardware, without a network connection to cloud servers. The engine is designed to work across different chip types and to process data from multiple sensors in real time. It is intended for devices operating with limited compute, power, or connectivity.

1 investor

1 investor

Superagent provides autonomous security research to identify, fix, and disclose software vulnerabilities in code and AI agents. The platform delivers patches as pull requests for software teams to review and deploy.

1 investor

SuperTokens is an open-source user authentication platform that enables developers to add authentication infrastructure to their products within 15 minutes. The company provides robust user management and authentication services to engineering teams building applications, following an open core model with free base features and paid enterprise capabilities.

1 investor

SuperTokens is an open-source authentication and session management solution that developers integrate via frontend and backend SDKs to build login, session handling, and user access controls. It offers features such as social logins, CAPTCHA protection, multi-tenancy, user banning, and migration tooling, positioning itself as a self-hostable alternative to Auth0, AWS Cognito, and Keycloak.

1 investor