prevent sql injection attacks

SQL injection attacks SQL injection attacks are one of the common means for hackers to attack databases. With the development of B/S application development, more and more programmers are writing applications using this mode. How

For example, SQL injection attacksXSS attacksCopy codeThe Code is as follows:Arbitrary Code ExecutionFile Inclusion and CSRF.} There are many articles about SQL attacks and various injection scripts, but none of them can solve the fundamental problem of

the previous example.) ） orderblog" resulttype= "Blog" parametertype= "map" > SELECT id,title,author,content From blog ORDER by ${orderparam} Careful observation, the format of the inline parameter changed from "#{xxx}" to "${xxx}". If we assign the parameter "orderparam" to "ID", the SQL is printed like this: SELECT id,title,author,content from blog ORDER by ID Obviously, this is not a way to prevent

['; drop table tb_name;] As varpasswd. Then:Select * from tb_name = 'random 'and passwd = ''; drop table tb_name; some databases won't let you succeed, but many databases can execute these statements.If you use precompiled statements. nothing you input will match the original statement. (the premise is that the database itself supports pre-compilation, but there may not be any server-side databases that do not support Compilation. Only a few desktop databases, that is, all files that access the

First, Introduction PHP is a powerful but fairly easy-to-learn server-side scripting language that even inexperienced programmers can use to create complex, dynamic Web sites. However, it often has many difficulties in achieving the secrecy and security of Internet services. In this series of articles, we'll show readers the security background and PHP -specific knowledge and code necessary for Web Development - You can protect the security and consistency of your own web applications. First, l

What is SQL injection attacks in an easy way (Episode 1) Let's take a look at what SQL is summarized by blame shu: Are you talking about SQL or goddess? I cannot tell you clearly. Although basic things are boring, they are very important. So let's take a look at

); -SqlDataReader dr =cmd. ExecuteReader (); the if(Dr. Read ()) - { -Console.WriteLine ("Login Successful!"); - } + Else - { +Console.WriteLine ("The user name or password is wrong!"); A } at Conn. Close (); - } - Program Analysis: The program is intended to be: if username and password in the data match exists, then return the user corresponding AccountId, indicating the suc