What is Ads.txt File?

The "Ads.txt" is simply a text file that can be placed on your blog's server and carries information about the advertising networks used by the blog's owner and the owner authorised these ads networks to show ads on the website. The main idea behind using this ads.txt file is to protect publishers from frauds and viruses as you will only authorise those ads network to display ads on your website which you're aware of and hence any malware script that showing ads on your blog without your permission from any unknown sources, cannot perform the task it ought to do.