sql injection attack prevention

1. Escape characters are not filtered correctly This form of injection or attack occurs when the user's input does not escape character filtering, which is passed to an SQL statement. This causes the end user of the application to perform operations on the statements on the database. For example, the following line of code demonstrates this vulnerability:

This article is translated from the Microsoft blog published in the relevant articles, the original English version of the original author of copyright, hereby declare. Original: http://blogs.technet.com/swi/archive/2008/05/29/sql-injection-attack.aspx Recent trends Since the second half of last year, many sites have been compromised, and they have been injected with malicious HTML These Web applications

Tags: input XML ext post case Inpu class xmlns host The so-called SQL injection attack is an attacker inserting a SQL command into a Web form's input domain or a page request query string, tricking the server into executing a malicious SQL command. In some forms, user-entere

Program | Attacks now web-based attacks are generally injected. The cause of the injection is generally incomplete filtering of the variable, which allows the intruder to execute the program or query to modify arbitrary data illegally. With the intensification of injection attacks, some special filtering code came into being. But some of the filtering code imperfections are likely to lead to new attacks. Th

this, you can also use the string's 16 binary: string per character loop output Dechex (Ord (...))/articles.php?id=0 Union Select 1,2,load_file (0x2f6574632f706173737764)Here only said the number of parameters of several attacks, belonging to the tip of the iceberg, string-type parameters, such as attack means to see the following link to the document.Defense:There are some software similar to SQL

For a long time, the security of web has great controversy and challenge. Among them, SQL injection is a common attack method, the common practice of developers is to constantly filter, escape parameters, but our PHP Dafa inherently weak type of mechanism, always let hackers have the advantage, bypassing defense and defense is always in the infighting.Brother Lia

SQL injection attacks:Because the SQL statements executed in DAO are stitched up, and some of them are passed in by the user from the client, it is possible to change the semantics of the SQL statement by using these keywords when the user passes in the data that contains the SQL