Case Study: adstir achieves large-scale ad fraud prevention and transparent, high-quality SSP inventory with SpiderAF

Contributing to building a sound ecosystem by securing quality and transparency of inventory as an SSP operator

adstir, Japan’s largest SSP operator, faced a rising wave of sophisticated ad fraud that threatened inventory quality and transparency. After demand‑side partners repeatedly flagged fraudulent media, adstir adopted Spider AF — using the Spider AF platform and joining the SHARED BLACKLIST (SBL) — to get clearer, data‑driven visibility and countermeasures.

Using Spider AF’s visual reports, customer‑success feedback, and IP Blacklist API integrations, adstir automated blocking and monthly cleanup workflows with a two‑person team. The result: months in which transmissions from over 100 fraudulent sources were stopped, stronger trust with demand partners via third‑party verification, and improved ability to “No Ad” on SBL‑listed IPs, with plans to expand into real‑time detection and blocking with Spider AF.

adstir

Nagata

Supply Operations Manager