Articles by Igor Ivitskiy

Igor Ivitskiy, PhD, is the founder of Doctor Ads, a forensic advertising practice. A mathematician by training, with more than 200 scientific publications and patents in mathematical modeling, he created the Profit Forensics methodology for finding hidden profit leaks in high-spend advertising accounts that standard analytics and platform automation do not surface. He has audited more than 2,000 advertising accounts and was ranked No. 6 in PPCsurvey.com's Top 50 Most Influential PPC Experts of 2026. He writes about how reported marketing performance compares with what shows up in a company's payment records.