| 摘要 |
Described herein are techniques to combat ad fraud, in which a client device is determined to be trustworthy or not trustworthy, and ads from an ad server are only provided to a client device that is determined to be trustworthy. As a result, client devices that have been infected with malware and ordinarily would have performed various forms of ad fraud (e.g., ad stacking, click fraud) receive no ads and are precluded from performing ad fraud. A proxy device within an ISP network may monitor all network traffic to and from the client device. Information useful in determining the trustworthiness of client device may be collected from the proxy device by an analysis server, which may use various indicators of trust in order to ascertain the trustworthiness of the client device. |
| 主权项 |
1. A method for a proxy communicatively coupled to a client, an ad server and a content provider, the method comprising:
receiving at the proxy a first request from the client for content from the content provider; in response to receiving the first request, transmitting by the proxy a second request to the content provider, the second request requesting the content on behalf of the client; receiving the content at the proxy from the content provider, the content comprising an ad tag that provides specifications for an advertisement to be inserted into the content; in response to detecting the ad tag, transmitting by the proxy a third request to the ad server for the advertisement to be inserted into the content, the third request including at least an identifier of the client; if the ad server determines based on the client identifier that the client is trustworthy, (i) receiving at the proxy the advertisement from the ad server, (ii) inserting by the proxy the advertisement into the content, and (iii) transmitting from the proxy to the client the content with the advertisement inserted therein, the advertisement inserted in accordance with the ad tag; and if the ad server determines based on the client identifier that the client is not trustworthy, (i) not receiving at the proxy the advertisement from the ad server, and (ii) transmitting from the proxy to the client the content, but without the advertisement specified by the ad tag. |
