Hello.

Could be adware, but nothing to worry.

Just do the following:

1) Start your PC in Safe Mode, by following these steps:

https://support.microsoft.com/en-us/windows/start-your-pc-in-safe-mode-in-windows-92c27cff-db89-8644-1ce4-b3e5e56fe234

2) Open the Run command:

https://www.makeuseof.com/windows-open-run-command-dialog-box/

and run the below commands one by one:

temp - delete all the folders/files in the folder

%temp% - delete all the folders/files in the folder

prefetch - delete all the folders/files in the folder

3) Restart your PC in General Mode, by following these steps:

https://www.techwalla.com/articles/how-to-restart-a-computer-in-normal-mode

4) Reset/Refresh your browsers:

Google Chrome - https://support.google.com/chrome/answer/3296214?hl=en

Mozilla Firefox - https://support.mozilla.org/en-US/kb/refresh-firefox-reset-add-ons-and-settings

Microsoft Edge - https://malwaretips.com/blogs/reset-microsoft-edge/

Opera - https://browsersolution.com/reset-opera-browser

Vivaldi - https://help.vivaldi.com/desktop/install-update/full-reset-of-vivaldi/

Brave - https://support.brave.com/hc/en-us/articles/360017903152-How-do-I-reset-Brave-settings-to-default-

5) Run a System Scan with your Bitdefender program.

6) Perform a scan with these FREE malware removal tools:

Kaspersky Virus Removal Tool 2020

https://www.kaspersky.com/downloads/free-virus-removal-tool

ESET Online Scanner

https://download.eset.com/com/eset/tools/online_scanner/latest/esetonlinescanner.exe

F-Secure Online Scanner

https://download.sp.f-secure.com/tools/F-SecureOnlineScanner.exe

Malwarebytes AdwCleaner

https://adwcleaner.malwarebytes.com/adwcleaner?channel=release

7) Restart your PC

8) If the steps provided above didn't help, do the following steps:

Take screenshot(s) of the issue,

create a log file on your Windows device using Bitdefender Support Tool, by following these steps:

https://www.bitdefender.com/consumer/support/answer/1733/

and

create a log file on your Windows device using BDsysLog, by following these steps:

https://www.bitdefender.com/consumer/support/answer/1922/

Next, contact Bitdefender Consumer Support by e-mail:

https://www.bitdefender.com/consumer/support/help/

with short description of the issue.

After that, you will get an automated reply by the Bitdefender Customer Care Team, with your ticket number.

Now, in reply to that automated reply, you can send the screenshot(s) you already took and the log files you already created in the first step.

Since you are all done, just wait for the support engineers to investigate your issue and find a solution to fix the issue.

Remember that the screenshot(s) and the log files will help a lot to the support engineers for better and faster investigation on your issue and finding a solution.

Regards.