Finding bugs using WayBackMachine

WayBackMachine is an archive of websites which contains over 330 billion web pages, all indexed for you to search through! WayBackMachine scrapes websites and saves a copy of it and you are able to go back numerous amounts of years & view what they use to look like. The Internet Archive is non-profit so if you do discover a finding because of their data then make sure to say thanks and support them!

What should I look for?

WayBackMachine has a lot more data archived than people realise, it's just about shifting through the data to discover the important parts. To sum up, you are primarily looking for:

Tools to help you