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‫It's a good approach to look at the archives or backups of the systems.

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‫You'll probably find some valuable data in those archives.

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‫The Internet Archive is a San Francisco based non-profit digital library with the stated mission of

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‫universal access to all knowledge.

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‫It provides free public access to collections of digitized materials, including websites, software

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‫applications and games, music movie videos, moving images and nearly three million public domain books.

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‫WEBVTT On Archive.org is the archive of the website's spurred by Internet Archive Library.

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‫Simply write down the URL of the target website.

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‫You'll see a timetable if you select a year from the timetable and you'll see the archive dates at the

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‫target website in details on the side, you see the date in which the target website is captured there

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‫in green circles.

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‫Suppose that a sensitive data was published on the target website accidentally a few days later, admins

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‫realized the mistake and remove the data from the website.

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‫But what if someone has already archived that website with the sensitive data?

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‫Select a year quicker date, which is in the green circle?

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‫You'll see an old version of your target website.

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‫That's what the NHS taught UK website look like on the 1st of May 2010.