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prevent data available on the site


phpdeveloper82

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At the end of the day, if someone badly wants your data, they will get it. However you can make it more difficult to obtain. As I have not seen what sort of data you are displaying it is not easy to say how simple it is to extract.

Couple of ideas:

1. Use a CAPTCHA graphic within a form before any data can be accessed. If the code is correctly inserted set a session. Check for this session on all pages displaying data.

2. As suggested check the number of requests per IP. This is not foolproof however as someone with a large number of proxies could change their IP on every request.

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Also displaying data using the DOM from AJAX requests makes it difficult to scrape.

 

Yeah, but it also makes it difficult (read: impossible) for people browsing without Javascript turned on, or people who use UAs that do not support Javascript at all (screen readers, lynx, etc.).

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1. Use a CAPTCHA graphic within a form before any data can be accessed. If the code is correctly inserted set a session. Check for this session on all pages displaying data.

 

The the user could enter the CAPTCHA once and pass the session ID to a mining program.  Really just adds one small layer.

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The the user could enter the CAPTCHA once and pass the session ID to a mining program.  Really just adds one small layer.

Of course. There will always be a way, however making things a little bit more difficult will deter some. People who use windows apps for web scraping etc should be put off.

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