Complex sentence: AdTruth was founded in 2011 by Ori Eisen of 41st Parameter, to repurpose the company's fraud detection and prevention technology, for use within the advertising industry to accurately target intended audiences, particularly in mobile.
Split into simpler sentences: AdTruth was founded in 2011 by Ori Eisen of 41st Parameter, whose fraud detection technology has been used for fraud detection and prevention. Eisen realized that this technology could be repurposed within the advertising industry to accurately target intended audiences, particularly in mobile.