There is a certain chance of being hacked. The mechanism of training is this: get your account password, and then the thugs will help you score. Now that you have your own account password, there is a risk of being hacked. Especially now, the risk of practicing on behalf of others is great, and it is difficult to distinguish between true and false. There may also be hacking under the banner of practicing on behalf of others. Therefore, it is best not to practice on behalf of others, or choose to practice on behalf of others with a certain reputation. Bind the buckle before practice to ensure safety, and change the password immediately after practice.