Validating drop down list in asp c sharp simon rex dating history
To ensure that the application is robust against all forms of input data, whether obtained from the user, infrastructure, external entities or database systems. This weakness leads to almost all of the major vulnerabilities in applications, such as Interpreter Injection, locale/Unicode attacks, file system attacks and buffer overflows.
All sections should be reviewed The most common web application security weakness is the failure to properly validate input from the client or environment.
Otherwise, you are allowing attackers to repeatedly attack your application until they find a vulnerability that you haven't protected against.
Detecting attempts to find these weaknesses is a critical protection mechanism.
In this case validation is impossible because there is no valid or invalid content.The account select option is read directly and provided in a message back to the backend system without validating the account number if one of the accounts provided by the backend system.An attacker can change the HTML in any way they choose: rather than account names.This is a dangerous strategy, because the set of possible bad data is potentially infinite.Adopting this strategy means that you will have to maintain the list of "known bad" characters and patterns forever, and you will by definition have incomplete protection.
Some documentation and references interchangeably use the various meanings, which is very confusing to all concerned.