Explain input validation in the context of the scenario
For input validation, evidence should be selected before writing the conclusion. Record the observation, identify the relevant context, then explain what the observation can and cannot prove. This avoids overclaiming and gives the web application security report a more defensible academic tone.
Where possible, compare the expected state with the observed state. For web application security, that comparison gives the reader a clear basis for judging whether the control, configuration, artefact or result is acceptable.
Evaluate access control instead of listing it
Students often lose marks by describing access control without evaluating it. A better approach is to compare the expected behaviour with the observed behaviour, identify the security consequence, and justify the next control or investigative step. That sequence keeps the discussion specific to web application security.
A useful discussion also acknowledges constraints. Time, available evidence, lab scope, legal boundaries and incomplete data can all limit what can be concluded about XSS or SQL injection.