The 404Project is a simple snippet of code you add to your 404 error page that submits information back to ISC for reporting. The main purpose of this project is to trend the web pages crawlers and automated bots are trying to access. A public report page will be available when enough data had been collected. isc.sans.edu/tools/404project.html

Overview
The 404Project submits URI, IP and USER AGENT. Additionally, date, time and your credentials are stored along with the data. Your personal information is protected https://isc.sans.edu/privacy.html#4 and your specific user information is not shared with third parties. https://isc.sans.edu/privacy.html#1
 

Instructions
- You must have an ISC Portal ID and Identification Key to use this tool. https://isc.sans.edu/login.html
- Once logged in and submitting data, you can view your 404 summary information. https://isc.sans.edu/my404.html
- Get started! https://isc.sans.edu/tools/404project.html#instructions

Our skilled users have ported the 404Project to many languages! At the time of this writing, in addition to the original PHP, there is also Perl, Python, .NET and even Javascript! https://isc.sans.edu/tools/404project.html#alternatives

You can leave comments in the section below or send any questions or comments in the contact form https://isc.sans.edu/contact.html

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Adam Swanger, Web Developer (GWEB)
Internet Storm Center (http://isc.sans.edu)