Securing WCF Service with Self Signed Certificates Programmatically

using System;
using System.Collections.Generic;
using System.IdentityModel.Selectors;
using System.Linq;
using System.Security.Cryptography.X509Certificates;
using System.Security;

namespace Certificate
{
    public class CertificateValidator : X509CertificateValidator
    {
        private readonly IEnumerable<string> trustedThumbprints;

        public CertificateValidator(IEnumerable<string> thumbprints)
        {
            this.trustedThumbprints = thumbprints;
        }

        public override void Validate(X509Certificate2 certificate)
        {
            //check if there is a certificate in the request
            if (certificate == null)
            {
                throw new SecurityException("Missing certificate");
            }
            //check if the certificate thumbprint is in the list of the trusted ones
            if (!trustedThumbprints.Any(thumbprint => thumbprint.Equals(certificate.Thumbprint)))
            {
                throw new SecurityException("The provided certificate is not trusted!");
            }
        }
    }
}