Dans le monde de la cybers\u00e9curit\u00e9, l’\u00e9volution constante des menaces a fait des mesures proactives une n\u00e9cessit\u00e9 pour toute entreprise. L’une de ces mesures est la protection contre les PUA (Potentially Unwanted Application), une fonction de Microsoft Defender qui permet d’emp\u00eacher l’installation de logiciels non d\u00e9sir\u00e9s. En veillant \u00e0 ce que les syst\u00e8mes soient prot\u00e9g\u00e9s contre ces menaces potentielles, les professionnels de l’informatique et les fournisseurs de services g\u00e9r\u00e9s (MSP) peuvent am\u00e9liorer consid\u00e9rablement leur posture de s\u00e9curit\u00e9.<\/p>\n
La protection PUA, qui fait partie de Microsoft Defender, est une fonction qui d\u00e9tecte et bloque les applications qui ne sont pas n\u00e9cessairement malveillantes mais qui peuvent \u00eatre ind\u00e9sirables en raison de leur comportement ou de leur impact sur un syst\u00e8me. L’importance de cet article ne doit pas \u00eatre sous-estim\u00e9e. Les professionnels de l’informatique et les entreprises MSP ont besoin d’outils pour garantir la s\u00e9curit\u00e9 de leurs syst\u00e8mes, et activer la protection contre les PUA est l’un des outils essentiels. Avec un nombre croissant de logiciels distribu\u00e9s en ligne, le risque de t\u00e9l\u00e9charger et d’installer par inadvertance des applications ind\u00e9sirables est plus \u00e9lev\u00e9 que jamais.<\/p>\n
<#\r\n.SYNOPSIS\r\n Enables PUA protection in MS Defender\r\n.DESCRIPTION\r\n Enables PUA protection in MS Defender\r\n.EXAMPLE\r\n No parameters needed.\r\n Enables PUA protection in MS Defender\r\n.OUTPUTS\r\n None\r\n.NOTES\r\n Minimum OS Architecture Supported: Windows 10, Windows Server 2016\r\n Release Notes:\r\n Initial Release\r\nBy using this script, you indicate your acceptance of the following legal terms as well as our Terms of Use at https:\/\/www.ninjaone.com\/terms-of-use.\r\n Ownership Rights: NinjaOne owns and will continue to own all right, title, and interest in and to the script (including the copyright). NinjaOne is giving you a limited license to use the script in accordance with these legal terms. \r\n Use Limitation: You may only use the script for your legitimate personal or internal business purposes, and you may not share the script with another party. \r\n Republication Prohibition: Under no circumstances are you permitted to re-publish the script in any script library or website belonging to or under the control of any other software provider. \r\n Warranty Disclaimer: The script is provided \u201cas is\u201d and \u201cas available\u201d, without warranty of any kind. NinjaOne makes no promise or guarantee that the script will be free from defects or that it will meet your specific needs or expectations. \r\n Assumption of Risk: Your use of the script is at your own risk. You acknowledge that there are certain inherent risks in using the script, and you understand and assume each of those risks. \r\n Waiver and Release: You will not hold NinjaOne responsible for any adverse or unintended consequences resulting from your use of the script, and you waive any legal or equitable rights or remedies you may have against NinjaOne relating to your use of the script. \r\n EULA: If you are a NinjaOne customer, your use of the script is subject to the End User License Agreement applicable to you (EULA).\r\n#>\r\n[CmdletBinding()]\r\nparam ()\r\n\r\nbegin {\r\n function Test-IsElevated {\r\n $id = [System.Security.Principal.WindowsIdentity]::GetCurrent()\r\n $p = New-Object System.Security.Principal.WindowsPrincipal($id)\r\n $p.IsInRole([System.Security.Principal.WindowsBuiltInRole]::Administrator)\r\n }\r\n}\r\nprocess {\r\n if (-not (Test-IsElevated)) {\r\n Write-Error -Message \"Access Denied. Please run with Administrator privileges.\"\r\n exit 1\r\n }\r\n if ($(Get-Command -Name \"Set-MpPreference\").Name -like \"Set-MpPreference\") {\r\n if ($(Get-MpPreference | Select-Object PUAProtection -ExpandProperty PUAProtection) -eq 0) {\r\n try {\r\n Set-MpPreference -PUAProtection Enabled -ErrorAction Stop\r\n }\r\n catch {\r\n Write-Error $_\r\n exit 1\r\n }\r\n Write-Host \"PUAProtection enabled.\"\r\n }\r\n else {\r\n Write-Host \"PUAProtection already enabled.\"\r\n }\r\n }\r\n else {\r\n Write-Error \"The module ConfigDefender was not found. Is MS Defender installed?\"\r\n }\r\n exit 0\r\n}\r\nend {}<\/pre>\n <\/p>\n\n