Preventing browser redirects on Android (and iOS) There seems to be an issue occurring with mobile browser apps on Android and iPhone being redirected to advertising sites. This is interrupting the browsing experience.

The problem:


A user visits a website on their phone in a current and up-to-date browser such as Chrome for Android or Firefox for Android, and a mobile ad is displayed
The ad causes a redirect from the currently displayed website to spaces.slimspots.com
The slimspots server seems to check if Javascript is active and then redirects to another ad, such as a competition webpage


Many users have reported this, both on the Chrome product forum and on the Apple forums, (links in the pastebin below) but nobody seems to understand what is actually occurring. People are doing unnecessary factory resets on their phones and complaining to various webmasters about the ads on their forums. 

The behavior can be replicated in a desktop browser by changing the User-Agent to a Nexus 4 and reloading a forum thread on a website (eg. xda-developers) until an offending ad appears.

Since I can't create more than two links here without gaining more reputation, you can find some useful content in this pastebin.

Can anybody provide advice on how to suppress these redirects, without resorting to a non-stock browser?
First of all: This kind of advertising should be reported!


  Can anybody provide advice on how to suppress these redirects, without
  resorting to a non-stock browser?


It looks like they use a bug in JavaScript. Maybe report to ad provider or app owner for blocking.

How to reproduce this issue:


If you use the preinstalled browser in Android, the ad site
opens "Google Play Store" and show you each time a different App.


How can I sandbox untrusted user-submitted JavaScript content?