Digital advertising plays an important role in making the web what it is today—a forum where anyone with a good idea and good content can reach an audience and potentially make a living. In order for this ads-supported, free web to work, it needs to be a safe and effective place to learn, create and advertise. Unfortunately, this isn’t always the case. Whether it's a one-off accident or a coordinated action by scammers trying to make money, a negative experience hurts the entire ecosystem. That’s why for the last 15 years, we’ve invested in technology, policies and talent to help us fight issues like ad fraud, malware and content scammers. Last year, we were able to remove more bad actors from our ad ecosystem than ever before, and at a faster rate.

We removed 100 bad ads per second

In 2017, we took down more than 3.2 billion ads that violated our advertising policies. That’s more than 100 bad ads per second! This means we’re able to block the majority of bad ad experiences, like malvertising and phishing scams, before the scams impact people. We blocked 79 million ads in our network for attempting to send people to malware-laden sites, and removed 400,000 of these unsafe sites last year. And, we removed 66 million “trick-to-click” ads as well as 48 million ads that were attempting to get users to install unwanted software.

New technology to better protect advertisers

Last year, we removed 320,000 publishers from our ad network for violating our publisher policies, and blacklisted nearly 90,000 websites and 700,000 mobile apps. We also introduced technology that allows us to better protect our advertisers by removing Google ads from individual pages on a website that violate our policies. Last year, we removed 2 million pages for policy violations each month. This has been critical in scaling enforcement for policies that prohibit monetization of inappropriate and controversial content. In fact, after expanding our policy against dangerous and derogatory content in April 2017 to cover additional forms of discrimination and intolerance, we removed Google ads from 8,700 pages that violated the expanded policy.

Fighting deceptive content online

Many website owners use our advertising platforms, like AdSense, to run Google ads on their sites and content and make money. We paid $12.6 billion to publishing partners in our ad network last year. But in order to make money from Google ads, you have to play by rules— that means respecting the user experience more than the ads.

Our publisher policies exist to help us maintain that balance, even as trends change online. For example, in recent years, we’ve seen the rise of scammers trying to take advantage of the growing popularity of online news to make money. We prohibit websites in our ad network from serving ads on misrepresentative content. Essentially this means that you can’t serve ads if you’re pretending to be a legitimate news website based in London when you’re actually a content scammer in a different city. In 2017, we found that a small number of publishers were responsible for the majority of these violations. Of the 11,000 websites we reviewed for potentially violating the misrepresentative content policy, we blocked over 650 of those sites and terminated 90 publishers from our network.  

More frequently, we see violations of our scraping content policy. This type of policy violation occurs when bad actors try to make money as quickly as possible by copying news or content from other sites. In 2017, we blocked over 12,000 websites for “scraping,” duplicating and copying content from other sites, up from 10,000 in 2016.

Does an ad with the headline “Ellen DeGeneres adopts a baby elephant!” make you want to click on it? You’re not alone. In recent years, scammers have tried to sell diet pills and weight-loss scams by buying ads that look like sensational news headlines but ultimately lead to a website selling something other than news. We suspended more than 7,000 AdWords accounts for tabloid cloaking violations, up from 1,400 in 2016.

New policies to tackle emerging threats

We’re constantly updating our policies as we see new threats emerge. Last year, we added 28 new advertiser policies and 20 new publisher policies to combat new threats and improve the ads experience online. This year, we updated several policies to address ads in unregulated or speculative financial products like binary options, cryptocurrency, foreign exchange markets and contracts for difference (or CFDs). We also updated our gambling ads policies to address new methods of gambling with items that have real-world value (e.g., skins gambling). And we will introduce a new certification process for rehabilitation facilities, allowing legitimate addiction treatment centers to connect with people in need.

A free and open web is a vital resource for people and businesses around the world. And ads play a key role in ensuring you have access to accurate, quality information online. But bad ads can ruin the online experience for everyone. They promote illegal products and unrealistic offers. They can trick people into sharing personal information and infect devices with harmful software. Ultimately, bad ads pose a threat to users, Google’s partners, and the sustainability of the open web itself.

We have a strict set of policies that govern the types of ads we do and don’t allow on Google in order to protect people from misleading, inappropriate, or harmful ads. And we have a team of engineers, policy experts, product managers and others who are waging a daily fight against bad actors. Over the years, this commitment has made the web a better place for you—and a worse place for those who seek to abuse advertising systems for their own gain.

In 2016, we took down 1.7 billion ads that violated our advertising policies, more than double the amount of bad ads we took down in 2015. If you spent one second taking down each of those bad ads, it’d take you more than 50 years to finish. But our technology is built to work much faster.

Last year, we did two key things to take down more bad ads. First, we expanded our policies to better protect users from misleading and predatory offers. For example, in July we introduced a policy to ban ads for payday loans, which often result in unaffordable payments and high default rates for users. In the six months since launching this policy, we disabled more than 5 million payday loan ads. Second, we beefed up our technology so we can spot and disable bad ads even faster. For example, “trick to click" ads often appear as system warnings to deceive users into clicking on them, not realizing they are often downloading harmful software or malware. In 2016, our systems detected and disabled a total of 112 million ads for “trick to click,” 6X more than in 2015.

Here are a few more examples of bad ads we took action against in 2016:

Ads for illegal products

Similarly, we saw more attempts to advertise gambling-related promotions without proper authorization from regulators in the countries they operate. We took down more than 17 million bad ads for illegal gambling violations in 2016.

Misleading ads

Bad ads on mobile

Ads trying to game the system

Bad actors know that ads for certain products—like weight-loss supplements or payday loans—aren’t allowed by Google's policies, so they try to trick our systems into letting them through. Last year, we took down almost 7 million bad ads for intentionally attempting to trick our detection systems.

In 2016, we saw the rise of tabloid cloakers, a new type of scammer that tries to game our system by pretending to be news. Cloakers often take advantage of timely topics—a government election, a trending news story or a popular celebrity—and their ads can look like headlines on a news website. But when people click on that story about Ellen DeGeneres and aliens, they go to a site selling weight-loss products, not a news story.

To fight cloakers, we take down the scammers themselves, and prevent them from advertising with us again. In 2016, we suspended more than 1,300 accounts for tabloid cloaking. Unfortunately, this type of bad ad is gaining in popularity because people are clicking on them. And a handful of scammers can pump out a lot of bad ads: During a single sweep for tabloid cloaking in December 2016, we took down 22 cloakers that were responsible for ads seen more than 20 million times by people online in a single week.

Promoting and profiting from bad sites

When we find ads that violate our policies, we block the ad or the advertiser, depending on the violation. But sometimes we also need to suspend the website promoted in the ad (the site people see after they click on it). So, for example, while we disabled more than 5 million payday loan ads last year, we also took action on 8,000 sites promoting payday loans.

Here are some examples of common policy violations we saw among bad sites in 2016:

• We took action on 47,000 sites for promoting content and products related to weight-loss scams.
  
• We took action on more than 15,000 sites for unwanted software and disabled 900,000 ads for containing malware.
  
• And we suspended around 6,000 sites and 6,000 accounts for attempting to advertise counterfeit goods, like imitation designer watches.

Publishers and website owners use our AdSense platform to make money by running ads on their sites and content, so we have strict policies in place to keep Google's content and search networks safe and clean for our advertisers, users and publishers. When a publisher violates our policies, we may stop showing ads on their site, or even terminate their account.

We've had long-standing policies prohibiting AdSense publishers from running ads on sites that help people deceive others, like a site where you buy fake diplomas or plagiarized term papers. In November, we expanded on these policies, introducing a new AdSense misrepresentative content policy, that helps us to take action against website owners misrepresenting who they are and that deceive people with their content. From November to December 2016, we reviewed 550 sites that were suspected of misrepresenting content to users, including impersonating news organizations.  We took action against 340 of them for violating our policies, both misrepresentation and other offenses, and nearly 200 publishers were kicked out of our network permanently.

In addition to all the above, we support industry efforts like the Coalition for Better Ads to protect people from bad experiences across the web. While we took down more bad ads in 2016 than ever before, the battle doesn’t end here. As we invest in better detection, the scammers invest in more elaborate attempts to trick our systems. Continuing to find and fight them is essential to protecting people online and ensuring you get the very best from the open web.

A free and open web is a vital resource for people and businesses around the world. And ads play a key role in ensuring you have access to accurate, quality information online. But bad ads can ruin the online experience for everyone. They promote illegal products and unrealistic offers. They can trick people into sharing personal information and infect devices with harmful software. Ultimately, bad ads pose a threat to users, Google’s partners, and the sustainability of the open web itself.

We have a strict set of policies that govern the types of ads we do and don’t allow on Google in order to protect people from misleading, inappropriate, or harmful ads. And we have a team of engineers, policy experts, product managers and others who are waging a daily fight against bad actors. Over the years, this commitment has made the web a better place for you—and a worse place for those who seek to abuse advertising systems for their own gain.

In 2016, we took down 1.7 billion ads that violated our advertising policies, more than double the amount of bad ads we took down in 2015. If you spent one second taking down each of those bad ads, it’d take you more than 50 years to finish. But our technology is built to work much faster.

Last year, we did two key things to take down more bad ads. First, we expanded our policies to better protect users from misleading and predatory offers. For example, in July we introduced a policy to ban ads for payday loans, which often result in unaffordable payments and high default rates for users. In the six months since launching this policy, we disabled more than 5 million payday loan ads. Second, we beefed up our technology so we can spot and disable bad ads even faster. For example, “trick to click" ads often appear as system warnings to deceive users into clicking on them, not realizing they are often downloading harmful software or malware. In 2016, our systems detected and disabled a total of 112 million ads for “trick to click,” 6X more than in 2015.

Here are a few more examples of bad ads we took action against in 2016:

Ads for illegal products

Similarly, we saw more attempts to advertise gambling-related promotions without proper authorization from regulators in the countries they operate. We took down more than 17 million bad ads for illegal gambling violations in 2016.

Misleading ads

Bad ads on mobile

Ads trying to game the system

Bad actors know that ads for certain products—like weight-loss supplements or payday loans—aren’t allowed by Google's policies, so they try to trick our systems into letting them through. Last year, we took down almost 7 million bad ads for intentionally attempting to trick our detection systems.

In 2016, we saw the rise of tabloid cloakers, a new type of scammer that tries to game our system by pretending to be news. Cloakers often take advantage of timely topics—a government election, a trending news story or a popular celebrity—and their ads can look like headlines on a news website. But when people click on that story about Ellen DeGeneres and aliens, they go to a site selling weight-loss products, not a news story.

To fight cloakers, we take down the scammers themselves, and prevent them from advertising with us again. In 2016, we suspended more than 1,300 accounts for tabloid cloaking. Unfortunately, this type of bad ad is gaining in popularity because people are clicking on them. And a handful of scammers can pump out a lot of bad ads: During a single sweep for tabloid cloaking in December 2016, we took down 22 cloakers that were responsible for ads seen more than 20 million times by people online in a single week.

Promoting and profiting from bad sites

When we find ads that violate our policies, we block the ad or the advertiser, depending on the violation. But sometimes we also need to suspend the website promoted in the ad (the site people see after they click on it). So, for example, while we disabled more than 5 million payday loan ads last year, we also took action on 8,000 sites promoting payday loans.

Here are some examples of common policy violations we saw among bad sites in 2016:

• We took action on 47,000 sites for promoting content and products related to weight-loss scams.
  
• We took action on more than 15,000 sites for unwanted software and disabled 900,000 ads for containing malware.
  
• And we suspended around 6,000 sites and 6,000 accounts for attempting to advertise counterfeit goods, like imitation designer watches.

Publishers and website owners use our AdSense platform to make money by running ads on their sites and content, so we have strict policies in place to keep Google's content and search networks safe and clean for our advertisers, users and publishers. When a publisher violates our policies, we may stop showing ads on their site, or even terminate their account.

We've had long-standing policies prohibiting AdSense publishers from running ads on sites that help people deceive others, like a site where you buy fake diplomas or plagiarized term papers. In November, we expanded on these policies, introducing a new AdSense misrepresentative content policy, that helps us to take action against website owners misrepresenting who they are and that deceive people with their content. From November to December 2016, we reviewed 550 sites that were suspected of misrepresenting content to users, including impersonating news organizations.  We took action against 340 of them for violating our policies, both misrepresentation and other offenses, and nearly 200 publishers were kicked out of our network permanently.

In addition to all the above, we support industry efforts like the Coalition for Better Ads to protect people from bad experiences across the web. While we took down more bad ads in 2016 than ever before, the battle doesn’t end here. As we invest in better detection, the scammers invest in more elaborate attempts to trick our systems. Continuing to find and fight them is essential to protecting people online and ensuring you get the very best from the open web.