►EXECUTIVE SUMMARY  1) CHANNEL STUFFING: THE $2M PERSONAL LOSS YOU NEVER SAW COMING: Seller shipped 2-3x the normal product volume to their top three customers right before the QoE — no CRM notes, no demand signals, no backup. Just manufactured revenue designed to make EBITDA look fat before you sign. 2) WHEN CUSTOMERS CALL TO SAY "WE'RE NOT PAYING" — YOU'RE ALREADY UNDERWATER: A month after close, those same customers tell you they got double-billed for product they never ordered. They'll take your next two months of shipments for free. Your revenue craters AND your working capital gets nuked simultaneously. 3) THIS IS THE EASIEST FRAUD TO MISS IN DILIGENCE: AR aging stretching from 2-3 weeks to 4-5 weeks is the canary in the coal mine. If your QoE provider isn't cross-referencing invoice volumes against CRM activity and historical ordering patterns, you're flying blind into a brick wall.