Single instance C# application

Program.cs

using System;
using System.Globalization;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Security.AccessControl;
using System.Security.Principal;
using System.Threading;

public static class Program
{
  public static void Main()
  {
    var guidAttribute = Assembly.GetExecutingAssembly().GetCustomAttribute<GuidAttribute>();
    var name = string.Format(CultureInfo.InvariantCulture, @"Global\{0}", guidAttribute.Value);
    var securityIdentifier = new SecurityIdentifier(WellKnownSidType.WorldSid, null);
    var mutexAccessRule = new MutexAccessRule(securityIdentifier, MutexRights.FullControl, AccessControlType.Allow);
    var mutexSecurity = new MutexSecurity();
    var hasHandle = false;
    Mutex mutex = null;

    mutexSecurity.AddAccessRule(mutexAccessRule);

    try
    {
      mutex = new Mutex(false, name, out var isCreated, mutexSecurity);

      if (isCreated)
      {
        // No other instances of the application are running.
        Console.WriteLine("Mutex has been created.");
      }
      else
      {
        // There are other instances of the application running, they may or may not be doing work.
        Console.WriteLine("Mutex already exists.");
      }

      try
      {
        hasHandle = mutex.WaitOne(TimeSpan.Zero, true);
      }
      catch (AbandonedMutexException)
      {
        hasHandle = true;
      }

      if (hasHandle)
      {
        // There are no other instances of the application doing work.
        Console.WriteLine("Mutex has been acquired.");
      }
      else
      {
        // There is another instance of the application doing work.
        Console.WriteLine("Mutex has not been acquired.");
      }

      Console.ReadKey(true);
    }
    finally
    {
      if (mutex != null)
      {
        if (hasHandle)
        {
          mutex.ReleaseMutex();
        }

        mutex.Dispose();
      }
    }
  }
}