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Guardion is a technology company focused on cybersecurity solutions, providing browser extensions and mobile applications designed for comprehensive online protection. Its platform offers monitoring for malicious sites, robust phishing and scam protection, data leak alerts, and identity management, notably emphasizing the security of AI-generated content and integrating with platforms like Outlook and Facebook. Operating on a freemium subscription model, Guardion achieved 500,000 paying users and $100 million in annual recurring revenue as of 2025. The company recently raised $80 million in November 2025, led by ION Crossover Partners, with significant contributions from investors including Tiger Global, Union Tech Ventures, and Vintage Investment Partners. This latest funding round notably tripled Guardion's valuation since its $47 million round in 2021. Guardion was established in 2018 by co-founders Michael Vainshtein, Amos Peled, and Daniel Sirota.
Guardion has raised $120K across 1 funding round.
Guardion has raised $120K in total across 1 funding round.
Guardion has raised $120K across 1 funding round. Most recently, it raised $120K Seed in January 2018.
| Date | Round | Lead Investors | Other Investors | Status |
|---|---|---|---|---|
| Jan 1, 2018 | $120K Seed | — | AIR Force Accelerator Powered BY Techstars | Announced |
Guardion has raised $120K in total across 1 funding round.
Guardion's investors include Air Force Accelerator Powered by Techstars.
Guardion is a technology company specializing in transforming high-sensitivity chemical analysis instruments, such as mass spectrometers, from bulky, lab-bound devices into portable, field-ready tools. Their core innovation lies in nanomaterial-based ion detectors that significantly enhance sensitivity while reducing power requirements and enabling operation in open air. Guardion’s products serve critical sectors including healthcare, environmental monitoring, and defense by enabling real-time, on-site chemical and radiation detection. The company is gaining early revenue through partnerships with established instrument manufacturers and plans to develop its own portable instruments for broader market adoption[1][2].
Founded in Massachusetts, Guardion emerged from the need to make chemical analysis more accessible and scalable outside traditional laboratory settings. The founding team leveraged advances in 2D material-based charge sensors to replace conventional electron multipliers, achieving unprecedented amplification and sensitivity without the need for high voltage or vacuum environments. This breakthrough technology attracted early recognition, including an Air Force SBIR Phase I award and the MassVentures START Stage 1 grant, validating Guardion’s innovative approach and supporting its growth trajectory[1].
Guardion rides the trend of decentralizing and democratizing chemical and radiation analysis by making high-precision instruments portable and affordable. This shift aligns with growing market demands for real-time environmental monitoring, healthcare diagnostics, and security applications outside traditional labs. The timing is favorable due to advances in nanotechnology, increasing regulatory focus on environmental and health safety, and the need for rapid threat detection. Guardion’s technology potentially accelerates innovation across industries by enabling new use cases and improving accessibility to critical analytical tools[1].
Guardion is positioned to expand its influence by moving from component sales to full portable instrument offerings, targeting markets with high demand for real-time, on-site chemical analysis. Future trends shaping their journey include increased adoption of point-of-care diagnostics, environmental sensing, and defense-related chemical detection. As Guardion scales production and broadens partnerships, it may become a key player in the portable analytical instruments market, possibly attracting strategic acquisitions. Their continued innovation in nanomaterial sensors will likely drive further improvements in sensitivity, cost, and usability, reinforcing their role in advancing global health, security, and industrial applications[1].
