Accel-KKR-backed Vobile, an online video content protection and monetization company, completed the acquisition of Rights ID and Channel ID units of Zefr, a video advertising company. Financial terms were not disclosed. "At Accel-KKR, we invest in vertically oriented technology businesses that add value to their niche industry. In our industry research, we have come to understand that Vobile along with Rights ID and Channel ID are viewed as thought leaders by content owners and production studios. We are pleased to support the acquisition and are excited to see Vobile expand with innovative solutions to help content owners address digital piracy and revenue opportunities," Samantha Shows, Accel-KKR Managing Director and Head of Credit Investing.