Check whether MySQL is hacked in one sentence

Check whether MySQL is hacked in one sentence
1. judge whether your MySQL is hacked by s elect * from mysql in one sentence. all login users of the user copy code MySQL are here. By default, the host field of the account should be local or the specified value. If it is %, remote connection is supported, especially for the root account, if there is a MySQL account with the host field content of % Percent, you should carefully check whether the hacker has changed your MySQL account configuration. 2. In one sentence, determine whether your MySQL contains the backdoor s elect * from mysql. func copy code. By default, the content in the func table of the mysql database is empty. When hackers perform operations such as udf and udf elevation, they will create information about the udf in this table. 3. There is no absolute intrusion Attack and Defense. The above is just a reference for beginners. After a certain foundation, you will find that hackers can crack the root password in MySQL. Without external connection support, you can use phpMyAdmin, in addition to user-defined functions, or use mof to escalate permissions... In addition, MySQL can also be hijacked by dll, and so on... Popular Science posts let you know something that is not commonly used but important in MySQL.