public/cis/Test-MtCisAuditLogSearch.ps1

<#
.SYNOPSIS
    Checks if audit log search is enabled
 
.DESCRIPTION
    Microsoft 365 audit log search should be enabled
    CIS Microsoft 365 Foundations Benchmark v5.0.0
 
.EXAMPLE
    Test-MtCisAuditLogSearch
 
    Returns true if audit log search is enabled
 
.LINK
    https://mycorp.dev/docs/commands/Test-MtCisAuditLogSearch
#>

function Test-MtCisAuditLogSearch {
    [CmdletBinding()]
    [OutputType([bool])]
    param()

    if (!(Test-MtConnection ExchangeOnline)) {
        Add-MtTestResultDetail -SkippedBecause NotConnectedExchange
        return $null
    }

    Write-Verbose "Get audit log search status"
    $auditLogSearch = Get-AdminAuditLogConfig | Select-Object UnifiedAuditLogIngestionEnabled

    Write-Verbose "Check audit log search is enabled"
    $result = $auditLogSearch | Where-Object { $_.UnifiedAuditLogIngestionEnabled -ne "True" }

    $testResult = ($result | Measure-Object).Count -eq 0

    if ($testResult) {
        $testResultMarkdown = "Well done. Your tenant has audit log search enabled:`n`n%TestResult%"
    }
    else {
        $testResultMarkdown = "Your tenant does not have audit log search enabled:`n`n%TestResult%"
    }

    $resultMd = "| Audit Log Search |`n"
    $resultMd += "| --- |`n"
    foreach ($item in $auditLogSearch) {
        $itemResult = "❌ Fail"
        if ($item.id -notin $result.id) {
            $itemResult = "✅ Pass"
        }
        $resultMd += "| $($itemResult) |`n"
    }

    $testResultMarkdown = $testResultMarkdown -replace "%TestResult%", $resultMd

    Add-MtTestResultDetail -Result $testResultMarkdown

    return $testResult
}