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Date:   Wed, 16 Oct 2002 15:11:58 -0400
Reply-To:   "Wainwright, Andrea" <andrea.wainwright@CAPITALONE.COM>
Sender:   "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:   "Wainwright, Andrea" <andrea.wainwright@CAPITALONE.COM>
Subject:   Re: Banning HTML-Spam ?
Content-Type:   text/plain; charset="iso-8859-1"

I have seen a similar techniques used, and there is one thing to do.

make sure that a robot can't read the word and fill it in.

What this page did was put up a jpg with the image of the word, with some lines drawn through it. The people could easily read it and answer back what the word was, but the robots couldn't scan it and figure out what it was.

-----Original Message----- From: Goldman, Brad (AT-Atlanta) [mailto:Brad.Goldman@AUTOTRADER.COM] Sent: Tuesday, October 15, 2002 2:13 PM To: SAS-L@LISTSERV.UGA.EDU Subject: Re: Banning HTML-Spam ?

Under this scheme, the idea shouldn't be to quiz users, but simply to make it harder to for spammers to automate a system. A much simpler query would work just as well: "What is your name?" Any answer would be considered a "correct" response. Or display a random character on the screen and ask users to repeat it. Anything that gets in the way of automatic systems subscribing, spamming, and unsubscribing. As long as it takes actual human effort to subscribe, it's a plus.

Though this would not address the usenet mirror issue at all.

Brad

> That would eliminate both complete beginners and advanced users. The > complete beginners won't know about data steps and procs, and the > advanced users will know that you can write a complete and useful SAS > program which uses neither data steps nor procs. > > Hint: macros. > > >>> "WIELKI Andre" <wielki@INED.FR> 10/15/2002 9:07 AM >>> > And to validate a subscriber > one easy question could be asked more like > What are the two steps in a sas program? > Data and proc

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