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A classification of SQL injection attacking vector as of 2010. In computing, SQL injection is a code injection technique used to attack data-driven applications, in which malicious SQL statements are inserted into an entry field for execution (e.g. to dump the database contents to the attacker).
An SQL injection takes advantage of SQL syntax to inject malicious commands that can read or modify a database or compromise the meaning of the original query. [13] For example, consider a web page that has two text fields which allow users to enter a username and a password.
Major DBMSs, including SQLite, [5] MySQL, [6] Oracle, [7] IBM Db2, [8] Microsoft SQL Server [9] and PostgreSQL [10] support prepared statements. Prepared statements are normally executed through a non-SQL binary protocol for efficiency and protection from SQL injection, but with some DBMSs such as MySQL prepared statements are also available using a SQL syntax for debugging purposes.
The attack was noted as POST SQL Injection in what was Bell's protection management login. The attackers provided screenshots that contained proof of Bell's knowledge of the attack dating back to the 15th of January, as well as results of the execution of the queries, Bell claims it is working with law-enforcement to investigate this attack ...
The attacker then leaked the full list of the 32 million passwords (with no other identifiable information) to the internet. Passwords were stored in cleartext in the database and were extracted through an SQL injection vulnerability. The Imperva Application Defense Center (ADC) did an analysis on the strength of the passwords. [22]
Hold claimed the hack was perpetrated through the use of an SQL injection. [ 7 ] [ 8 ] According to a Forbes article, Hold Security said that not all the 1.2 billion credentials were stolen this way, as there were also ones that CyberVor simply bought from people that used other means, and Hold Security didn't know what the split is.
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It is common for a web application to store in a database the hash value of a user's password. Without a salt, a successful SQL injection attack may yield easily crackable passwords. Because many users re-use passwords for multiple sites, the use of a salt is an important component of overall web application security. [14]