1. Ad Fraud
Kevin Zhuang- 莊為任

2. Agenda
u What is Ad Fraud
u All kinds of Ad Fraud Method
u Case Study
u METHBOT

3. Definition
u Ad fraud is a type of scam in which the perpetrator fools advertisers (mostly)
into paying for something that is worthless to them, such as fake traffic, fake
leads or misrepresented and ineffective ad placement.
u Victim: Advertisers (mostly)
u Method:
u fake traffic
u fake leads
u Misrepresented and ineffective ad placement

5. All kinds of Ad Fraud Method
u Publisher 端詐騙
u Click Fraud
u Search Result Fraud
u Ad Placement Fraud
u Invisible and Hidden Ads
u Ad Stacking

6. All kinds of Ad Fraud Method
u 流量詐騙
u Impression laundering
u Domain spoofing

7. All kinds of Ad Fraud Method
u 非法軟體/廣告軟體對用戶端的詐騙
u Hijacking Browser
u Hijacking Clicks
u Popunders

8. All kinds of Ad Fraud Method
u 廣告主詐騙
u 埋挖礦 Script 透過廣告投放到 Client

9. Case study –獵豹 App Click Injection

10. Case study - AdExchange 廣告交易中心的疑似詐騙行為
u 某網站流量跟 CTR 都很固定，約在每日十萬， CTR約在 1.x% 左右。算是很不錯
的流量來源。
然後忽然此網站某幾個版位某天 CTR 開始逐步成長到 3.x%，以廣告交換中心會
覺得這些版位成效不錯，並且逐漸拉高廣告出價(bid floor)。
忽然某個小時灌入近 10 倍的流量，同時 Click 沒有變動，CTR 則大幅下降，由
於廣告交換中心 bid floor 計算還來不急反應下修，變等於是使用 3.x% CTR 的出
價去購買這些 10倍的流量，進而造成發佈商營收大量增加。
u 類似股市坑殺散戶的概念

11. Case study –SSP/ADX 充滿詐騙 Publisher 如何自保
u 真實流量誠可貴！ IAB 抵制虛假流量 ads.txt 誕生
u https://www.tenmax.io/archives/12074

12. What is Methbot
u 一個來自俄羅斯的團體，主要詐騙目標是全世界的廣告生態圈，控制美國許多資
料中心(Data Centers) ，他們擁有的機器人農場( Bot Farm)每天可以產生 300萬-
500萬美金的營利。
u https://www.whiteops.com/methbot

13. What is Methbot

14. Methbot anti Fraud-Detection Service
u Screen Object Construction
u Dynamic Code Patching
u Viewability Spoofing Behaviors
u Human Input Simulation

15. Screen Object Construction (假造
Screen/Event)

16. Screen Object Construction (假造
Screen/Event)

17. Screen Object Construction (假造
Screen/Event)

18. Dynamic Code Patching

19. Viewability Spoofing Behaviors

20. Viewability Spoofing Behaviors

21. Human Input Simulation

22. References
u Ref: http://www.kvzhuang.net/2018/11/adexchange.html
u Ref: whiteops - The Methbot Operation
https://cdn2.hubspot.net/hubfs/3400937/Resources/WO_Methbot_Operation
_WP.pdf
u Ref: Ads.txt https://www.tenmax.io/archives/12074
u Ref: https://clearcode.cc/blog/rtb-online-advertising-fraud/
u Ref: https://whatis.techtarget.com/definition/ad-fraud