Whenever you use a script, platform or concept in your business, you need to be thoughtful about its safety. You cannot take a chance with the protection of your data and information. You have no clue how your applications or scripts can become a source of data or information breech. What is the point if your confidential data gets leaked? Such a thing would be a threat to your business name, reputation and overall working.
Source Code Vulnerabilities
Another simple and common cause of security holes in the source code is the massive use of public packages and that of libraries. Though the pure variety offered is certainly an advantage, this even means there are potentially a huge number of hidden vulnerabilities in such packages that get installed in web application projects.
Moreover, you do not need to forget that developers mostly install packages even for the most common tasks, hence expanding the dependencies of their project. This certainly can lead to security issues and have other far-reaching outcomes or consequences. Here, though monitoring and addressing all sort of possible application dependency vulnerabilities might be time-consuming and labor-intensive, different tools like auditing tools may help to automate and hence hasten the process.
- Enhancing awareness of best practices amidst the developers
- Proper auditing of proper application code to find out the potential vulnerabilities
- Writing down the unit tests not just to make sure that code behaves as expected, but even that it executes securely
Of course, once you keep a check on all these things, you can be more confident about the security of your script.
In some instances , it could be preferable to just remove risky characters from the data received as input. This may provide some level of protection but should not be relied on alone for safety from data manipulation. There are diverse techniques that the attackers can use to avoid such filters.
Escaping or Encoding User Input
To avert this, any time browser-supplied data is going to be returned in a response (whether immediately reproduced or retrieved from a database), you must ensure that these special characters get replaced with escape codes for such characters.