RestSharp转储代理凭据到内存转储

Question

我正在使用RestSharp在我的项目中使用HTTP API。我观察到RestSharp在执行请求后将代理凭据转储到内存转储中，我想保护它免遭内存转储。 有什么方法可以防止潜在的内存转储攻击？

        public bool GetConnectionStatus(ProxyCredentials proxyCredentials)
    {
        byte[] additionalEntropy = { 9, 8, 7, 6, 5 };
        var unprotectedPwdBytes = ProtectedData.Unprotect(proxyCredentials.Password, additionalEntropy, DataProtectionScope.LocalMachine);
        var secureString = new SecureString();
        var webClient = new WebClient();
        this.RestClient.Proxy = webClient.Proxy;
        unsafe
        {
            // Copy the unprotected password bytes to unmanaged memory.
            var srcPointer = (byte*)Marshal.StringToHGlobalAnsi(Encoding.UTF8.GetString(unprotectedPwdBytes)).ToPointer();
            //// Looping through one thing at a time making sure to overwrite the values as we go
            for (var index = 0; index < unprotectedPwdBytes.Length; index++)
            {
                secureString.AppendChar((char)(srcPointer[index] - 1));
                srcPointer[index] = 0;
            }

            webClient.Proxy.Credentials = new NetworkCredential(proxyCredentials.UserName, secureString);
            this.RestClient.Proxy.Credentials = webClient.Proxy.Credentials;

        }

        try
        {
            var request = new RestRequest("api/item/", Method.POST);
            request.RequestFormat = DataFormat.Json;
            IRestResponse response = this.RestClient.Execute(request);
        }
        catch
        {

        }

        return true;
    }

restsharp