网站access数据库被攻击不断增大

using System;
using System.Data.OleDb;

public class DatabaseHelper
{
    private string connectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\path\\to\\your\\database.mdb";

    public void ExecuteQuery(string username, string password)
    {
        using (OleDbConnection connection = new OleDbConnection(connectionString))
        {
            connection.Open();
            string query = "SELECT * FROM Users WHERE Username = ? AND Password = ?";
            using (OleDbCommand command = new OleDbCommand(query, connection))
            {
                command.Parameters.AddWithValue("@Username", username);
                command.Parameters.AddWithValue("@Password", password);
                using (OleDbDataReader reader = command.ExecuteReader())
                {
                    // 处理查询结果
                }
            }
        }
    }
}