Microsoft's Opinionated Misfit Geek - CAPTCHA Kinda Spam Prevention in ASP.NET

Thursday, November 08, 2007

CAPTCHA Kinda Spam Prevention in ASP.NET

Spammers really bug me.

I've been working on this on-going sports related portal project (that probably will NEVER go live :)

I love of hobby community sites degrade quickly because they lack the moderation resources to keep the user submitted content quality high and I've been thinking about this problem.

I thought I would share some interesting links that I found on the subject.

Thursday, November 08, 2007 12:39:57 AM (Atlantic Standard Time, UTC-04:00)

Comments [3] - Trackback
ASP.NET | Misfit Geek [Syndicated]

Monday, November 12, 2007 6:39:02 AM (Atlantic Standard Time, UTC-04:00)

Joe, you might want to look at this method http://blog.madskristensen.dk/post/Simple-method-to-avoid-comment-spam.aspx

It uses an invisible CAPTCHA that also BlogEngine.NET uses and it just works. Since this was rolled out with the first version of BlogEngine.NET I haven't had a single automated spam comment on my blog ever since.

Mads Kristensen

Wednesday, November 28, 2007 8:59:39 AM (Atlantic Standard Time, UTC-04:00)

Joe,

Some MSDN info on this:

http://research.microsoft.com/hip/

Anthony :-)

Anthony Grace

Wednesday, November 28, 2007 9:00:19 AM (Atlantic Standard Time, UTC-04:00)

Oops...

this is the proper link:

http://msdn2.microsoft.com/en-us/library/ms972952.aspx

:-S

Anthony Grace

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