Enigma, a US-based big data analytics company, which provides a search and discovery platform for public data, has raised a $4.5m series A round of funding, led by Comcast Ventures, the corporate venturing division of US-based cable and telecommunications corporation Comcast, with participation from American Express Ventures, corporate venturing unit of credit card company American Express, venture capital firm Crosslink Capital and the US media company, the New York Times Company.

Prior to this latest round of funding, Enigma raised…