PUP.Optional.BlazerBrowser
ThreatDown is now the name of the Malwarebytes line of business products. References to Malwarebytes below reflect the amazing technology used to first identify the threat.
Short bio
PUP.Optional.BlazerBrowser is Malwarebytes’ detection name for a Chromium based browser which sometimes gets installed in misleading ways.
Type of infection
PUP.Optional.BlazerBrowser was installed in some instances after clicking a download button on a downloadsite discussing another app.
Protection
Malwarebytes blocks the installer of PUP.Optional.BlazerBrowser to provide users with the option to make an informed choice.

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.
- Open Malwarebytes for Windows.
- Click the Detection History
- Click the Allow List
- To add an item to the Allow List, click Add.
- Select the exclusion type Allow a file or folder and use the Select a folder button to select the main folder for the software that you wish to keep.
- Repeat this for any secondary files or folder(s) that belong to the software.
If you want to allow the program to connect to the Internet, for example to fetch updates, also add an exclusion of the type Allow an application to connect to the internet and use the Browse button to select the file you wish to grant access.