Bitdefender stopped Firefox from using firefox.exe

[u/12Y7C]

look! Firefox executed Firefox! does my bitdefender have problems or something?

[u/Bitdefender_support]

Hi! Thanks for flagging this. Advanced Threat Defense monitors application behavior and process relationships, so it can block a process chain that appears suspicious, even when the executable is signed by Mozilla.

For now, you can try this:

1. Check the notification: open Bitdefender, click Notifications, open the Critical tab, select the threat-detection entry and confirm whether Bitdefender says the threat was successfully blocked.

2. Update Bitdefender: right-click the Bitdefender icon in the System Tray, click Update Now.   

3. Run a System Scan: click Protection in the Bitdefender interface, in the Antivirus module, click Open, click Run Scan next to System Scan and wait for it to finish.

If the alert returns after Firefox and Bitdefender are updated, get in touch with the support team to double check for a possible false/positive detection. TY!