Short bio

PUP.Optional.FullTab is the detection for a few potentially unwanted Chrome extensions that are newtab hijackers.

Type and source of infection

PUP.Optional.FullTab takes control of which site will open when the user opens a new browser tab on an affected system. These extensions are promoted by adware and/or other potentially unwanted programs to trick the user into believing they are useful.


Promotion of PUP.Optional.FullTab


Malwarebytes blocks the domain that pushes the extensions.

block fulltab.com

Malwarebytes blocks fulltab.com


Malwarebytes can detect and remove PUP.Optional.FullTab without further user interaction.

  1. Please download Malwarebytes to your desktop.
  2. Double-click mb3-setup-consumer-{version}.exe and follow the prompts to install the program.
  3. Then click Finish.
  4. Once the program has fully updated, select Scan Now on the Dashboard. Or select the Threat Scan from the Scan menu.
  5. If another update of the definitions is available, it will be implemented before the rest of the scanning procedure.
  6. When the scan is complete, make sure that all Threats are selected, and click Remove Selected.
  7. Restart your computer when prompted to do so.

Add an exclusion

Add an exclusion

Should users wish to keep this program and exclude it from being detected in future scans, they can add the program to the exclusions list. Here’s how to do it.

The Exclusions tab includes a list of items to be excluded from scans. The items may include files, folders, websites, or applications that connect to the Internet, as well as previously detected exploits.

To access the exclusions in Malwarebytes:


Chrome extensions:






Related blog content

How to avoid potentially unwanted programs
How your business can avoid potentially unwanted programs