Z-Quest, Z-Quest


Z-Quest is adware that adds advertisements on the top and bottom of web pages viewed with Internet Explorer. It is installed by trojans, without the user's knowledge or consent. There is no visual indication the adware is running on the system other than the additional advertisement banners.

Automatic action

Based on the settings of your F-Secure security product, it may block the file from running, move it to the quarantine where it cannot spread or cause harm, or ask you to select an action.

Suspect a file is incorrectly detected (a False Positive)?

A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:

  • Check for the latest database updates

    First check if your F-Secure security program is using the latest detection database updates, then try scanning the file again.

  • Submit a sample

    After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.

    NOTE If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.

  • Exclude a file from further scanning

    If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.

    Note You need administrative rights to change the settings.

For more Support


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User Guide

See the user guide for your product on the Help Center.

Contact Support

Chat with or call an expert for help.

Submit a sample

Submit a file or URL for further analysis.

Technical Details

Z-Quest adds banners to the top and bottom of some web pages viewed with Internet Explorer. The banners can be very difficult to distinguish from banners designed to be on the web page. Example with Z-Quest banner

Z-Quest has a set of banners to display from which it randomly selects. Some of the advertisements contain code to generate pop-ups. Z-Quest can be installed silently by trojans. There is nothing to indicate that Z-Quest is running on a user's computer.