Microsoft Security Guide: Block Adobe Flash Activation

<# .SYNOPSIS Blokkeert Flash activatie in Office documenten .DESCRIPTION Dit script implementeert Microsoft Security Guide control voor het blokkeren van Flash activatie in Office documenten. Flash is deprecated en vormt een beveiligingsrisico. Deze control vereist handmatige configuratie via Group Policy omdat de exacte registry implementatie nog niet volledig is gedocumenteerd door Microsoft. .REQUIREMENTS - PowerShell 5.1 of hoger - Lokale administrator rechten voor Group Policy wijzigingen - Microsoft Office geïnstalleerd .PARAMETER Monitoring Controleert de huidige compliance status .PARAMETER Remediation Toont handmatige configuratie instructies .PARAMETER Revert Toont instructies voor herstellen .PARAMETER WhatIf Toont wat er zou gebeuren zonder wijzigingen door te voeren .EXAMPLE .\block-flash-activation.ps1 -Monitoring Controleert of Flash activatie is geblokkeerd .EXAMPLE .\block-flash-activation.ps1 -Remediation Toont instructies voor het blokkeren van Flash activatie .NOTES Microsoft Security Guide Control: Block Flash activation in Office documents Handmatige configuratie vereist via Group Policy #> #Requires -Version 5.1 param( [switch]$Monitoring, [switch]$Remediation, [switch]$Revert, [switch]$WhatIf ) # Globale variabelen $ControlID = "MSG-OFFICE-FLASH" function Test-Compliance { # Deze control vereist handmatige verificatie return $false } function Invoke-Monitoring { Write-Host "Monitoring ${ControlID}: Flash activatie blokkeren in Office documenten" -ForegroundColor Green Write-Host "`nDeze control vereist HANDMATIGE VERIFICATIE:" -ForegroundColor Yellow Write-Host "" Write-Host "CONTROLE STAPPEN:" -ForegroundColor Cyan Write-Host "1. Open Group Policy Management Console (gpedit.msc)" -ForegroundColor White Write-Host "2. Navigeer naar: User Configuration > Administrative Templates > Microsoft Office 2016" -ForegroundColor White Write-Host "3. Zoek naar: 'Block Flash activation in Office documents'" -ForegroundColor White Write-Host "4. Verifieer dat de policy is ingesteld op: Enabled: Block all activation" -ForegroundColor White Write-Host "" Write-Host "ALTERNATIEF via Registry:" -ForegroundColor Cyan Write-Host "Path: HKCU:\Software\Policies\Microsoft\Office\16.0\Common\Security" -ForegroundColor White Write-Host "Value: BlockFlashActivation = 1 (indien beschikbaar)" -ForegroundColor White return $false } function Invoke-Remediation { Write-Host "Remediating ${ControlID}: Flash activatie blokkeren in Office documenten" -ForegroundColor Yellow Write-Host "`nDeze control vereist HANDMATIGE CONFIGURATIE:" -ForegroundColor Yellow Write-Host "" Write-Host "REMEDIATION STAPPEN:" -ForegroundColor Cyan Write-Host "1. Open Group Policy Management Console (gpedit.msc)" -ForegroundColor White Write-Host "2. Navigeer naar: User Configuration > Administrative Templates > Microsoft Office 2016" -ForegroundColor White Write-Host "3. Zoek naar: 'Block Flash activation in Office documents'" -ForegroundColor White Write-Host "4. Dubbelklik op de policy" -ForegroundColor White Write-Host "5. Selecteer: Enabled" -ForegroundColor White Write-Host "6. Kies: Block all activation" -ForegroundColor White Write-Host "7. Klik op: OK" -ForegroundColor White Write-Host "8. Run 'gpupdate /force' om policy toe te passen" -ForegroundColor White Write-Host "" Write-Host "RATIONALE:" -ForegroundColor Cyan Write-Host "Flash is deprecated sinds 2020 en vormt een ernstig beveiligingsrisico." -ForegroundColor White Write-Host "Alle Flash content moet worden geblokkeerd in Office documenten." -ForegroundColor White return $false } function Invoke-Revert { Write-Host "Reverting ${ControlID}: Flash activatie blokkering herstellen" -ForegroundColor Yellow Write-Host "`nHERSTEL STAPPEN:" -ForegroundColor Cyan Write-Host "1. Open Group Policy Management Console (gpedit.msc)" -ForegroundColor White Write-Host "2. Navigeer naar: User Configuration > Administrative Templates > Microsoft Office 2016" -ForegroundColor White Write-Host "3. Zoek naar: 'Block Flash activation in Office documents'" -ForegroundColor White Write-Host "4. Dubbelklik op de policy" -ForegroundColor White Write-Host "5. Selecteer: Not Configured (of Disabled)" -ForegroundColor White Write-Host "6. Klik op: OK" -ForegroundColor White Write-Host "7. Run 'gpupdate /force' om policy toe te passen" -ForegroundColor White return $false } # Hoofd uitvoering try { if ($Monitoring) { $result = Invoke-Monitoring exit 1 } elseif ($Remediation) { $result = Invoke-Remediation exit 1 } elseif ($Revert) { $result = Invoke-Revert exit 0 } else { Write-Host "Gebruik: .\block-flash-activation.ps1 [-Monitoring] [-Remediation] [-Revert] [-WhatIf]" -ForegroundColor Yellow Write-Host " -Monitoring: Controleer huidige compliance status" -ForegroundColor White Write-Host " -Remediation: Toon handmatige configuratie instructies" -ForegroundColor White Write-Host " -Revert: Toon instructies voor herstellen" -ForegroundColor White Write-Host " -WhatIf: Toon wat er zou gebeuren" -ForegroundColor White } } catch { Write-Host "✗ Onverwachte fout: $($_.Exception.Message)" -ForegroundColor Red exit 1 }