Documentation for Confluence 5.7.
Documentation for Confluence Cloud and earlier versions of Confluence is available too.

Title: Configuring Captcha for Spam Prevention  
Author: Tom Davies [Atlassian] Apr 12, 2006
Last Changed by: Giles Brunning [Atlassian Technical Writer] Mar 23, 2015
Tiny Link: (useful for email) https://confluence.atlassian.com/x/8pcC
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    Page: Configuring Confluence Security
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Mar 23, 2015 00:56 Giles Brunning [Atlassian Technical Writer] View Changes
Published by Scroll Versions from space DOCM and version 5.7
Mar 16, 2015 04:48 Rachel Robins [Atlassian Technical Writer] View Changes
Published by Scroll Versions from space DOCM and version 5.7
Jan 27, 2015 21:44 Rachel Robins [Atlassian Technical Writer] View Changes
Published by Scroll Versions from space DOCM and version 5.7
Jun 11, 2014 01:01 Rachel Robins [Atlassian Technical Writer] View Changes
Published by Scroll Versions from space DOCM and version 5.5
Oct 15, 2012 04:03 Sarah Maddox [Atlassian]  
Migrated to Confluence 5.3
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