Risk defense startup SpecTrust is emerging from stealth today with a $4.3 million seed raise and a public launch. Cyber Mentor Fund led the round, which also included participation from Rally Ventures, SignalFire, Dreamit Ventures and Legion Capital. SpecTrust aims to “fix the economics of fighting fraud” with a no-code platform that it says cuts 90% of a business’ risk infrastructure spend that responds to threats in “minutes instead of months.” “In January of 2020, I got a bug in my ear to, instead of an API, build a cloud-based…