Mozilla Firefox - Clear History, Cache, and Cookies on Exit
Summary
This remote monitor automatically configures Mozilla Firefox to clear browsing history, cache, and cookies on exit by setting the appropriate registry keys for each installed browser.
Note:
- The changes will only take effect once the browser is restarted if it's currently open.
- If the PowerShell version on the machines is older than version 5, the remote monitor may not produce the expected outcomes.
Details
Suggested "Limit to": Windows Computers
Suggested Alert Style: Once
Suggested Alert Template: Default - Do Nothing
| Check Action | Server Address | Check Type | Execute Info | Comparator | Interval | Result |
|---|---|---|---|---|---|---|
| System | 127.0.0.1 | Run File | REDACTED | State Based | 604800 (Weekly) | REDACTED |
Target
- Managed Windows Workstations and Servers
Ticketing
Ticket Subject: Mozilla Firefox Clear History on Exit - Failed on %CLIENTNAME%\%COMPUTERNAME%
Ticket Body:
Failed to enable the clear history, cache, and cookies settings for %CLIENTNAME%\%COMPUTERNAME%. The script was unable to set the following registry keys:
%RESULT%
Manual investigation is required.
Implementation
Step 1
Obtain the group ID(s) of the group(s) that the remote monitor should be applied to.
Step 2
Copy the following query and replace YOUR COMMA SEPARATED LIST OF GROUPID(S) with the Group ID(s) of the relevant groups:
(The string to replace can be found at the very bottom of the query, right after WHERE)
INSERT INTO groupagents
SELECT '' as `AgentID`,
`groupid` as `GroupID`,
'0' as `SearchID`,
'ProVal - Production - Mozilla Firefox – Clear History, Cache, and Cookies on Exit' as `Name`,
'6' as `CheckAction`,
'1' as `AlertAction`,
'Mozilla Firefox Clear History on Exit - Failed on %CLIENTNAME%\\%COMPUTERNAME%~~~Successfully enabled the clear history, cache, and cookies settings for Mozilla Firefox on %CLIENTNAME%\\%COMPUTERNAME%.!!!Mozilla Firefox Clear History on Exit - Failed on %CLIENTNAME%\\%COMPUTERNAME%~~~Failed to enable the clear history, cache, and cookies settings for %CLIENTNAME%\\%COMPUTERNAME%. The script was unable to set the following registry keys:
%RESULT%
Manual investigation is required.' as `AlertMessage`,
'0' as `ContactID`,
'604800' as `interval`,
'127.0.0.1' as `Where`,
'7' as `What`,
'C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\powershell.exe -ExecutionPolicy Bypass -Command "$ErrorActionPreference = \'SilentlyContinue\';$browser=\'Mozilla Firefox\';$path=\'HKLM:\\SOFTWARE\\Policies\\Mozilla\\Firefox\\SanitizeOnShutdown\';$keys=@(\'Cache\',\'History\',\'Cookies\');function Find-Application{param([String]$Name);$uninstallPaths=@(\'HKLM:\\Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall\',\'HKLM:\\Software\\Wow6432Node\\Microsoft\\Windows\\CurrentVersion\\Uninstall\');if(Get-ChildItem -Path $uninstallPaths|Get-ItemProperty|Where-Object{$_.DisplayName -match $Name}){$Name}else{$false}};$failures=@();function Set-RegValue{param([String]$Browser,[String]$Path,[String]$Reg,[String]$Value);if((Get-ItemProperty -Path $Path -ErrorAction SilentlyContinue).$Reg -ne $Value){try{Set-ItemProperty -Path $Path -Name $Reg -Value $Value -Force -ErrorAction Stop}catch{$failed=[PSCustomObject]@{Browser=$Browser;Path=$Path;Key=$Reg;Value=$Value};return $failed}}};if(Find-Application -Name $browser){if(!(Test-Path -Path $Path)){New-Item -Path $Path -Force -Confirm:$false|Out-Null};foreach($key in $keys){$failures+=Set-RegValue -Browser $browser -Path $path -Reg $key -Value 1}};if($failures){return ($failures|Format-List|Out-String)}"' as `DataOut`,
'16' as `Comparor`,
'10|(^((OK){0,}(\\r\\n){0,}[\\r\\n]{0,}\\s{0,})$)|11|(^((OK){0,}(\\r\\n){0,}[\\r\\n]{0,}\\s{0,})$)%7CBrowser|10|Browser' as `DataIn`,
'' as `IDField`,
'1' as `AlertStyle`,
'0' as `ScriptID`,
'' as `datacollector`,
'21' as `Category`,
'0' as `TicketCategory`,
'1' as `ScriptTarget`,
(UUID()) as `GUID`,
'root' as `UpdatedBy`,
(NOW()) as `UpdateDate`
FROM mastergroups m
WHERE m.groupid IN (YOUR COMMA SEPARATED LIST OF GROUPID(S))
AND m.groupid NOT IN (SELECT DISTINCT groupid FROM groupagents WHERE `Name` = 'ProVal - Production - Mozilla Firefox – Clear History, Cache, and Cookies on Exit')
Step 3
An example of a query with a group ID:
INSERT INTO groupagents
SELECT '' as `AgentID`,
`groupid` as `GroupID`,
'0' as `SearchID`,
'ProVal - Production - Mozilla Firefox – Clear History, Cache, and Cookies on Exit' as `Name`,
'6' as `CheckAction`,
'1' as `AlertAction`,
'Mozilla Firefox Clear History on Exit - Failed on %CLIENTNAME%\\%COMPUTERNAME%~~~Successfully enabled the clear history, cache, and cookies settings for Mozilla Firefox on %CLIENTNAME%\\%COMPUTERNAME%.!!!Mozilla Firefox Clear History on Exit - Failed on %CLIENTNAME%\\%COMPUTERNAME%~~~Failed to enable the clear history, cache, and cookies settings for %CLIENTNAME%\\%COMPUTERNAME%. The script was unable to set the following registry keys:
%RESULT%
Manual investigation is required.' as `AlertMessage`,
'0' as `ContactID`,
'604800' as `interval`,
'127.0.0.1' as `Where`,
'7' as `What`,
'C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\powershell.exe -ExecutionPolicy Bypass -Command "$ErrorActionPreference = \'SilentlyContinue\';$browser=\'Mozilla Firefox\';$path=\'HKLM:\\SOFTWARE\\Policies\\Mozilla\\Firefox\\SanitizeOnShutdown\';$keys=@(\'Cache\',\'History\',\'Cookies\');function Find-Application{param([String]$Name);$uninstallPaths=@(\'HKLM:\\Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall\',\'HKLM:\\Software\\Wow6432Node\\Microsoft\\Windows\\CurrentVersion\\Uninstall\');if(Get-ChildItem -Path $uninstallPaths|Get-ItemProperty|Where-Object{$_.DisplayName -match $Name}){$Name}else{$false}};$failures=@();function Set-RegValue{param([String]$Browser,[String]$Path,[String]$Reg,[String]$Value);if((Get-ItemProperty -Path $Path -ErrorAction SilentlyContinue).$Reg -ne $Value){try{Set-ItemProperty -Path $Path -Name $Reg -Value $Value -Force -ErrorAction Stop}catch{$failed=[PSCustomObject]@{Browser=$Browser;Path=$Path;Key=$Reg;Value=$Value};return $failed}}};if(Find-Application -Name $browser){if(!(Test-Path -Path $Path)){New-Item -Path $Path -Force -Confirm:$false|Out-Null};foreach($key in $keys){$failures+=Set-RegValue -Browser $browser -Path $path -Reg $key -Value 1}};if($failures){return ($failures|Format-List|Out-String)}"' as `DataOut`,
'16' as `Comparor`,
'10|(^((OK){0,}(\\r\\n){0,}[\\r\\n]{0,}\\s{0,})$)|11|(^((OK){0,}(\\r\\n){0,}[\\r\\n]{0,}\\s{0,})$)%7CBrowser|10|Browser' as `DataIn`,
'' as `IDField`,
'1' as `AlertStyle`,
'0' as `ScriptID`,
'' as `datacollector`,
'21' as `Category`,
'0' as `TicketCategory`,
'1' as `ScriptTarget`,
(UUID()) as `GUID`,
'root' as `UpdatedBy`,
(NOW()) as `UpdateDate`
FROM mastergroups m
WHERE m.groupid IN (2,3,855,856)
AND m.groupid NOT IN (SELECT DISTINCT groupid FROM groupagents WHERE `Name` = 'ProVal - Production - Mozilla Firefox – Clear History, Cache, and Cookies on Exit')
Step 4
Now execute your query from a RAWSQL monitor set.
Step 5
Locate your remote monitor by opening the group(s) remote monitors tab.
Changelog
2025-05-23
- Initial version of the document