Learn The Grapple Against Scam Ads—By The Numbers

This is the minute inward a serial of posts that volition supply greater transparency virtually how nosotros brand our ads safer past times detecting together with removing scam ads. -Ed.
Last month, I shared an overview of the technology scientific discipline Google has built to preclude bad ads from showing on Google together with our partner sites, including our efforts to review accounts, sites together with ads. To illustrate the scale of this challenge, today I’d similar to supply unopen to metrics that give greater insight into the scale of the work we’re combating.

Bad ads receive got a disproportionately negative number on our users; fifty-fifty a unmarried bad advertising slipping through our defenses is i equally good many. That’s why we’re constantly working to improve our systems together with utilize novel techniques to preclude bad ads from appearing on Google together with our partner sites. In fact, billions of ads are submitted every yr for a broad diversity of products. We receive got a laid upward of ads policies that comprehend a huge array of areas inward to a greater extent than than twoscore unlike languages. For example, because nosotros aim to exhibit safe, true together with accurate ads to our users, nosotros don’t permit ads for misleading claims, ad spam or malware.

Ads that are inward violation of our ads policies aren’t allowed to endure shown on Google together with our AdSense partner sites. For many repeat offenders, nosotros ban non simply ads but also advertisers who essay to abuse our advertising arrangement to receive got wages of people. In the instance of ads that are promoting counterfeit goods, nosotros typically ban the advertiser afterwards alone i violation. Here are unopen to metrics that give unopen to insight into the scale of the acquit upon nosotros receive got had over time, showing the numbers of actions we’ve taken against advertiser accounts, sites together with ads. You tin give the sack come across that the numbers are growing—and growing faster over time.

Year	Advertiser Accounts Suspended for Terms of Service together with Advertising Policies	Sites Rejected for Site Policy	Ads Disapproved
2011	824K	610K	134M
2010	248K	398K	56.7M
2009	68.5K	305K	42.5M
2008	18.1K	167K	25.3M

We bring out that at that topographic point are relatively few malicious players, who brand multiple attempts to bypass our defenses to defraud users. As nosotros teach amend together with faster at catching these advertisers, they redouble their efforts together with exercise to a greater extent than accounts at an fifty-fifty faster rate.

Even inward this ever-escalating arms race, our efforts are working. One method nosotros role to essay the success of our efforts is to inquire human raters to country us how we’re doing. These human raters review a laid upward of sites that are advertised on Google. We role a large laid upward of sites inward fellowship to teach an accurate statistical reading of our efforts. We also weight the sites inward our statistical sample based on the number of times a item site was displayed then that if a item site is shown to a greater extent than often, it’s to a greater extent than probable to endure inward our sample set. By using human raters, nosotros tin give the sack calibrate our automated systems together with ensure that we’re improving our efforts over time. In 2011, nosotros reduced the percent of bad ads by to a greater extent than than 50 percent compared amongst 2010. That agency the proportion of bad ads that are showing on Google was halved inward simply a year.

Google’s long-term success is based on people trusting our products. We desire to brand certain that the ads on Google are prophylactic together with trustworthy, together with we’re non satisfied until nosotros do.

Posted past times David W. Baker, Director of Engineering, Advertising