Google has alerted advertisers that its invalid traffic filters cannot stop invalid submissions from reaching their advertisers’ contact forms, PPC Land reports. In a
Google Ads Help Centre page, the firm explains that its anti-bot systems judge ad clicks after the ad has shown, so that bots can still fill in a company’s contact form. Tt is up to the
advertiser to check contact forms with tools like reCAPTCHA and email confirmation links, Google states.