It is not recommended to use same password across different websites, but having said that is there a way that lets you get an idea of which passwords you used the most?yes – Mozilla released Password Reuse Visualizer add-on for Firefox as a part of Watchdog project(we’ve covered Visual Hashing Extension in the past) lets you see which passwords you’re using the most and where you’re using them.  Then onwards, you can figure out where to start changing passwords and which passwords you shouldn’t reuse and the picture will improve when you start changing passwords and update your Firefox password manager.

used passwords visualization

Visualize Reused Passwords on Websites with Mozilla’s Password Reuse Visualizer Add-on

Password Reuse Visualizer displays a force direct graph visualization (using d3.js and SVG) of your passwords and sites you use on them.

Getting started: click on its padlock icon on add-on bar to activate and the visualization starts. Visualization tells the following summary.

  • Green nodes represent distinct password you use, hover over them to see a visual hash of your password and click to view your password in clear text.
  • The blue nodes represent individual sites you use, and they’re connected, by blue edges, to the green password nodes you use on that site.
  • You may also see orange box-shaped nodes that connect two password nodes. These are warnings about password similarity. Password similarity can be a wise and secure tool to use a single password across many different sites, so these warnings are not necessarily bad, or even a call to action. They connect passwords of the same "family".

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