Phylum, a software supply chain security company, has raised $4.5 million in seed funding led by First In with participation from TechOperators; General Advance; Verissimo Ventures; Area 51 Ventures; Vijay Pandurangan; Philip Martin, CSO for Coinbase; and Caleb Sima, CSO for Robinhood.

Phylum helps companies defend their systems by identifying risk across the entire software supply chain to stay ahead of today's cybersecurity threats and emerging attack vectors.