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LocalStorage

what is local storage?

You can think of local storage as a place that your browser stores small pieces of information about you, locally. It is typically used to store small pieces of information, like your user preferences (whether you are using dark mode or not 😈), and IDs.

Local storage stores data in the form of key - value pairs. You can think of this like a name tag associated with each value. Whenever you are trying to look for something, all you need to know is the name tag!

but what are some of the issues of this?

  • Anybody can manipulate local storage. Cannot store any sensitive information.
  • Size limitation - Can only store 5MB.
  • Possibility of leaking sensitive information.
  • Cross site scripting attacks

tasks.

  1. Your task is to exploit the local storage on the website.
  2. Firstly, how do you navigate to where you can view local storage? (Hint: Right click!)
  3. Then, what can you do with the data that is being stored there. What format is it in? Can you modify it?