$topic = "topic_name" # Use a secure, unguessable topic name

$username = "username"

$password = "password"

$messageBody = "Hello friend, this is just a test."

$messageTitle = "Security Alert"

$ntfyServer = "https://ntfy.sh"

$credential = New-Object System.Management.Automation.PSCredential($username, (ConvertTo-SecureString $password -AsPlainText -Force))

$authHeader = "Basic " + [Convert]::ToBase64String([Text.Encoding]::UTF8.GetBytes($username + ":" + $password))

$requestParams = @{

Method = "POST"

URI = "$($ntfyServer)/$($topic)"

Body = $messageBody

Headers = @{

"Title" = $messageTitle

"Authorization" = $authHeader

}

}

try {

Invoke-RestMethod @requestParams

Write-Host "Ntfy message sent successfully to topic '$topic'."

}

catch {

Write-Host "An error occurred: $($_.Exception.Message)"

}