Virgil Security, a Manassas-based application security startup that makes cryptographic software for developers, said on Wednesday it has raised $4 million in its first round of funding, led by KEC Ventures. Bloomberg Beta, Blu Venture Investors, Charge Ventures, NextGen Venture Partners, Sparkland Capital and Working Lab Capital also participated in the round, along with individual investors Ray Rothrock and Matt Grimm. Founded in 2014, Virgil provides cloud-based key management services in conjunction with open source libraries that give developers password-free authentication, encryption and cryptographic verification that can be integrated into a client’s products. The company, which graduated from the Mach37 Cyber Accelerator‘s fall 2014 cohort, earlier this year announced a key partnership with Twilio that lets developers integrate Virgil’s encryption capabilities into Twilio’s messaging services. “This round of funding will allow Virgil to further accelerate the market adoption of our technology, expand our developer evangelism and sales team, and allow us to extend our technology into additional vertical markets,” said co-founder and CEO Michael Wellman.