US Patent 11301894 Systems, methods, and media for detecting suspicious activity

Systems, methods, and media for detecting suspicious activity in connection with advertisement impressions are provided. In some embodiments, the method includes: collecting advertisement impression information associated with a plurality of pages; determining, from the collected advertisement impression information, an indication of whether a browser application detected that an advertisement displayed on a webpage was viewable in a browser window; determining, from the collected advertisement impression information, a plurality of viewability statistics for each of the plurality of pages, wherein each viewability statistic indicates a likelihood of whether an advertisement displayed on a webpage was viewable in a browser window; comparing the plurality of viewability statistics with the indication from the browser application; determining a viewability score for the advertisement impression based on the comparison; and identifying the advertisement impression as likely to be suspicious based on the determined viewability score.