The article “Five common Web application vulnerabilities” lists and explains five common attack forms and presents an example how this vulnerability could have been exploited. The explanation is clearly aimed at people who do not have dealt with such vulnerabilities before, seems to be a great way to start and getting informed.
The five attacks in question are:
- Remote code execution
- SQL injection
- Format string vulnerabilities
- Cross Site Scripting (XSS)
- Username enumeration
Another great feature of this article is the reference section beneath each attack form which provides you with more indepth information about the subject. Again, a great way to get started.

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