Windows HOSTS File Updater 1.0B - PowerShell

# Updates the Windows HOSTS file for the best protection from scams and unwanted content
# [Must be run as an Administrator]
# Version: 1.0B
# Date Modified: 30/07/17
# Lists at: https://github.com/StevenBlack/hosts

$sourceURL = 'https://raw.githubusercontent.com/StevenBlack/hosts/master/alternates/fakenews-social/hosts'
$hostsFile = "$($env:windir)\system32\Drivers\etc\hosts"
$outputFile = "$home\Desktop\HOSTS Backups\new-hosts-file.txt"
$hostsBackupFile = "$home\Desktop\HOSTS Backups\"

# 1) Backs up current Windows HOSTS File to the Desktop
Write-Host '1) Backing up Windows HOSTS file...' -ForegroundColor Yellow
# Create Backup folder
New-Item -Path $hostsBackupFile -ItemType directory -WarningAction SilentlyContinue -ErrorAction SilentlyContinue
# Create Backup file
$hostsBackupFile = $hostsBackupFile+'HOSTS-File-Backup-'+(Get-Date -Format "yyyy-MM-dd\@h-mm-ss")+'.zip'
Compress-Archive -LiteralPath $hostsFile -CompressionLevel Optimal -DestinationPath $hostsBackupFile
Write-Host 'Windows HOSTS file backed up.' -ForegroundColor Green

Write-Host

# 2) Downloads HOSTS file content
Write-Host '2) Downloading latest HOSTS file update...' -ForegroundColor Cyan
$start_time = Get-Date
(New-Object System.Net.WebClient).DownloadFile($sourceURL, $outputFile)
Write-Host 'HOSTS file update has been downloaded.' -ForegroundColor Green
Write-Host "Time taken to download: $((Get-Date).Subtract($start_time).Seconds) second(s)" -ForegroundColor Green

Write-Host

# Checks Downloaded File
if(Test-Path($outputFile))
{
    # Checks the filesize is larger than 1 MB
    if((Get-Item $outputFile).length -gt 1mb)
    {
        # 3) Replace Windows HOSTS file
        Write-Host '3) Updating Windows HOSTS file with new data...' -ForegroundColor Magenta
        $newHOSTSData = Get-Content -Path $outputFile
        Set-Content -Path $hostsFile -Value $newHOSTSData
        # Clear the DNS
        Clear-DnsClientCache
        $nowDateTime = Get-Date
        Write-Host 'Windows HOSTS has been updated, DNS cache cleared. Process completed at'$nowDateTime -ForegroundColor Green
    }
}

# Opens HOSTS file as Administrator
Start-Process "notepad.exe" -ArgumentList "/W $hostsFile" -Verb runAs