A Simple Taint Checking Solution for C#

namespace TaintChecking
{
    public class Tainted<T>
    {
        private bool _tainted;
        private T _target;

        public delegate bool IsCleanUntaintTreatmentMethod(T taintedObject);

        public Tainted(T target)
        {
            _tainted = true;
            _target = target;
        }

        public bool IsTainted
        {
            get { return _tainted; }
        }

        public bool IsClean
        {
            get { return !this.IsTainted; }
        }

        public T Target
        {
            get
            {
                if(this.IsTainted)
                {
                    throw new TaintException();
                }
            
                return _target;
            }
        }

        public void Taint()
        {
            _tainted = true;
        }

        public void Untaint(IsCleanUntaintTreatmentMethod treatmentMethod)
        {
            _tainted = !treatmentMethod(_target);
        }
    }
}