MENLO PARK, Calif., October 9, 2019-- U.S. Venture Partners, a leading Silicon Valley venture capital firm, announced today the promotion of Dafina Toncheva to General Partner. Dafina joined USVP in November 2012 after several years in high-technology operating roles and experience at other notable venture capital firms. Dafina invests in emerging technologies in the enterprise space with focus on Enterprise SaaS applications and Cybersecurity. Her track record includes leading the first institutional round of investment in companies such as Cloudflare (NYSE: NET), Kenna Security, Matrixx Software and Prevoty (acquired by Imperva).