HiddenLayer vs Riot
Side-by-side comparison of AI visibility scores, market position, and capabilities
HiddenLayer protects AI models from adversarial attacks, model theft, and evasion techniques with a model-agnostic security layer requiring no architecture changes.
About
HiddenLayer is an AI security company founded in 2022 that raised $50M in Series A funding to protect machine learning models from adversarial attacks and exploitation. The platform sits between AI models and the inputs they receive, monitoring for adversarial examples, prompt injection attacks, model inversion attempts, and evasion techniques designed to manipulate model outputs. HiddenLayer also protects against model theft through model extraction detection and intellectual property protection controls that alert teams when adversaries attempt to clone proprietary models. The platform is model-agnostic and integrates with existing ML infrastructure without requiring changes to model architectures or inference pipelines. HiddenLayer serves enterprises in financial services, defense, and technology sectors where AI models process sensitive data or make high-stakes decisions. The company's security research team regularly publishes findings on novel AI attack techniques, building credibility as a thought leader in AI security alongside its commercial platform.
Paris cybersecurity employee risk monitoring at $10M+ ARR 2024 (triple-digit growth) serving Mistral AI, Deel, Intercom, Y Combinator;
About
Riot is a Paris, France-based employee cybersecurity awareness and monitoring platform — backed with $45 million in total funding including a $30 million Series B in February 2025 led by Left Lane Capital at a $170 million+ post-money valuation with Y Combinator, Base10, and FundersClub — providing 1,500+ organizations including Mistral AI, Y Combinator, Modern Treasury, Deel, Intercom, L'Occitane, and Le Monde with real-time employee cybersecurity vulnerability detection and AI-powered awareness coaching through Albert, Riot's AI cyber coach. Surpassing $10 million in annual revenue in 2024 with triple-digit year-over-year growth, Riot detects employee-level security risks (weak passwords, unsafe file permissions, phishing susceptibility) and guides employees through interactive remediation coaching without requiring IT security team manual intervention.
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