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# AdMob Ad Serving has been Limited due to Invalid Activity

[Open in Zendesk](https://smartxaas.zendesk.com/hc/en-us/articles/360050407191) | 
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- Google is working on their own terms since they have monopoly in the market. It's really difficult to say if any kind of traffic they don't like but we have [Proprietary Fraud Detection System](https://cpidroid.com/advertiser/features.php#FraudDetectionSystem) to ensure traffic (installs) are from real users / devices only.
- Since Google did not transparently provided any clear explanation as expected since they often do one-sided decision and the worst thing is these decisions are automated.
- However, we did some research and found that usually ad serving limit typically impacts publishers for less than 30 days, it may take longer in some cases.
- Limited ad serving applies to AdMob Network only and doesn’t affect third-party mediation, house ads, and direct sold campaigns. - Have you setup third-party mediation?
- It is highly recommended not to rely solely on Google since they have monopoly in the market, they often do one-sided decision and the worst thing is these decisions are automated.

<span class="wysiwyg-underline">Some useful information, might be helpful:</span>

- Invalid traffic includes any clicks or impressions that may artificially inflate an advertiser's costs or a publisher's earnings. Invalid traffic covers intentionally fraudulent traffic as well as accidental clicks.

<span class="wysiwyg-underline">Invalid traffic includes, but is not limited to:</span>

- Clicks or impressions generated by publishers clicking on their own live ads
- Repeated ad clicks or impressions generated by one or more users
- Publishers encouraging clicks on their ads (examples may include: any language encouraging users to click on ads; ad implementations that may cause a high volume of accidental clicks; etc.)
- Automated clicking tools or traffic sources, robots, or other deceptive software