Short bio

PUP.Optional.Crossrider is a Potentially Unwanted Program (PUP), specifically a type of adware. It offers a highly configurable method for its clients to monetize their software. The common method to infect the end-users is software bundlers. The installers usually resort to browser hijacking. Targeted browsers are Internet Explorer, Firefox, Chrome, and sometimes Opera. Crossrider not only targets Windows machines but Macs as well.


  • CrossBrowse is an example of a more advanced variant of Crossrider

Common infection method

PUP.Optional.Crossrider installs are typically triggered by bundlers that offer software you might be interested in and combine them with adware or other monetizing methods.

Avoidance advice:


Associated threats

  • PUP.Optional.Crossrider.A
  • PUP.Optional.Crossrider.T
  • PUP.Optional.CrossBrowse


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