HiddenLayer vs Notabene
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.
Crypto Travel Rule compliance platform connecting 165+ VASPs globally for KYC data sharing across 80+ jurisdictions; $27.1M with DRW Trading Series B processing $500B+ transactions preventing $1B+ high-risk.
About
Notabene is a Brooklyn-based cryptocurrency compliance platform that helps crypto exchanges, financial institutions, and virtual asset service providers (VASPs) meet Travel Rule requirements across 80+ jurisdictions — providing the infrastructure for compliant transfer of customer identification information between crypto businesses when transactions exceed regulatory thresholds (typically $1,000+ in the US, $1,000 EUR in Europe). Founded in 2019 and backed by Y Combinator with $27.1 million raised including a $14.5 million Series B led by DRW Trading Group in November 2024, Notabene serves 165+ companies globally, processing $500 billion+ in transactions annually while preventing $1 billion+ in high-risk transactions in 2024.
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