Prevent malware in ad content
Google actively works with trusted advertisers and partners to help prevent malware in ads. All publishers, ad networks and ad operations teams should follow security recommendations detailed at http://www.anti-malvertising.com.
Google has developed proprietary technology and malware detection tools to regularly check creatives. Fourth-party calls or sub-syndication to any uncertified advertisers or vendors are forbidden. Our automated malware checker scans all creatives. Any ad that we detect distributing malware will be pulled to protect users from harm. Any Ad Exchange buyer whose creative is found to contain malware is subject to a minimum three-month suspension. If you have a creative under policy violation, learn how to resolve it.