What does a web tester need to know?

Question

Python

Greetings to all users!) I
became interested in the field of web testing, but the question arose, what should I know in order to conduct grammatical tests? As I understand it, I have to understand how to look for vulnerabilities, but what needs to be done for this? As a tool I use python. Worked with selenium. Can you suggest any books/resources/articles/videos to get acquainted with this information.
Thank you for your attention!)

Answer 1

Something like this. A web service should have documentation - the main functions, what buttons and colors are used, how much it can withstand loads, etc. Testing - comparison of the real state with the documentation. To search for vulnerabilities, you will have to write illegal software - punishable :).
In general, there are many vacancies for automators, including for mobile software.
Books/videos - https://scanlibs.com/?s=selenium
Testing theory - https://www.youtube.com/watch?v=3MBT9O6i0jk&list=P...
Listen - radio-qa.com
Finding vulnerabilities - https ://www.mavensecurity.com/resources/web-security...
Know - English, Linux, bash / python, what the web consists of. Set up a virtual laboratory, roll out old versions of software - stores, for example, try to use known vulnerabilities. Explore the most known closed vulnerabilities.