Captcha - Revision history

Briana: /* ReCAPTCHA */

2017-01-09T15:57:37Z

‎ReCAPTCHA

Jakeh: /* ReCAPTCHA for ColdFusion Forms */

2014-03-18T18:57:04Z

‎ReCAPTCHA for ColdFusion Forms

Jakeh: /* What is a CAPTCHA? */

2013-02-09T21:08:35Z

‎What is a CAPTCHA?

Jakeh: /* ReCAPTCHA */

2013-02-09T19:20:09Z

‎ReCAPTCHA

Jakeh: /* Getting Started */

2013-02-09T18:57:48Z

‎Getting Started

Jakeh at 18:57, 9 February 2013

2013-02-09T18:57:07Z

Briana: Created page with "To prevent bots from "hijacking" your email forms, we recommend using a CAPTCHA. This is a technology that requires human interaction before it allows the user to submit a for..."

2012-10-26T17:48:12Z

Created page with "To prevent bots from "hijacking" your email forms, we recommend using a CAPTCHA. This is a technology that requires human interaction before it allows the user to submit a for..."

New page

To prevent bots from "hijacking" your email forms, we recommend using a CAPTCHA. This is a technology that requires human interaction before it allows the user to submit a form. There are several implementations of this available, but a great choice is ReCAPTCHA. This particular CAPTCHA system has plugins that allow it to be used with technologies such as ASP.Net or PHP: http://www.google.com/recaptcha/whyrecaptcha

Another good, free option is Secureimage for PHP which is available here: http://www.phpcaptcha.org/

@@ Line 4: / Line 4: @@
 ==Popular CAPTCHA Software==
 ===ReCAPTCHA===
-''"About 200 million CAPTCHAs are solved by humans around the world every day. In each case, roughly ten seconds of human time are being spent. Individually, that's not a lot of time, but in aggregate these little puzzles consume more than 150,000 hours of work each day."''
+ReCaptcha provided by Google is a great choice.
-''"reCAPTCHA improves the process of digitizing books by sending words that cannot be read by computers to the Web in the form of CAPTCHAs for humans to decipher. More specifically, each word that cannot be read correctly by OCR is placed on an image and used as a CAPTCHA. This is possible because most OCR programs alert you when a word cannot be read correctly. <br /><br />But if a computer can't read such a CAPTCHA, how does the system know the correct answer to the puzzle? Here's how: Each new word that cannot be read correctly by OCR is given to a user in conjunction with another word for which the answer is already known. The user is then asked to read both words. If they solve the one for which the answer is known, the system assumes their answer is correct for the new one. The system then gives the new image to a number of other people to determine, with higher confidence, whether the original answer was correct."''
+https://www.google.com/recaptcha/intro/index.html
-−
-This particular CAPTCHA system has plugins that allow it to be used with technologies such as ASP.Net, PHP, and ColdFusion (see below): http://www.google.com/recaptcha/whyrecaptcha
 ===Securimage===

← Older revision		Revision as of 18:57, 18 March 2014
Line 115:		Line 115:

	This example collects the Name, Email, DOB, Address, City, State, Zip, Phone, Note, IP of the submitter. Some fields are optional, so if there's something you DON'T need to collect, just remove it from between the cfform, cfmail, and cfoutput sections.		This example collects the Name, Email, DOB, Address, City, State, Zip, Phone, Note, IP of the submitter. Some fields are optional, so if there's something you DON'T need to collect, just remove it from between the cfform, cfmail, and cfoutput sections.
		+
		+	==CAPTCHA Alternatives==
		+	===CFFormProtect===
		+	CFFormProtect provides spam protection for forms that is invisible to the end user. More information on the project and its implementation is [http://cfformprotect.riaforge.org/ available at RIAForge].
		+	===PHPFormProtect===
		+	PHPFormProtect implements the same form security as CFFormProtect, but is intended for PHP applications. It is available from the project's [GitHub repository https://github.com/mccarthy/phpFormProtect]

@@ Line 1: / Line 1: @@
 ==What is a CAPTCHA?==
-To prevent bots from "hijacking" your email forms, we recommend using a CAPTCHA. This is a technology that requires human interaction before it allows the user to submit a form.
+This is a technology that requires human interaction before it allows the user to submit a form, and it stands for "Completely Automated Public Turing test to tell Computers and Humans Apart". This helps prevent bots from "hijacking" your email forms, and we recommend using a CAPTCHA on any form on your Web site.
 ==Popular CAPTCHA Software==
 ===ReCAPTCHA===

@@ Line 7: / Line 7: @@
 ''"About 200 million CAPTCHAs are solved by humans around the world every day. In each case, roughly ten seconds of human time are being spent. Individually, that's not a lot of time, but in aggregate these little puzzles consume more than 150,000 hours of work each day."''
-''"reCAPTCHA improves the process of digitizing books by sending words that cannot be read by computers to the Web in the form of CAPTCHAs for humans to decipher. More specifically, each word that cannot be read correctly by OCR is placed on an image and used as a CAPTCHA. This is possible because most OCR programs alert you when a word cannot be read correctly.
+''"reCAPTCHA improves the process of digitizing books by sending words that cannot be read by computers to the Web in the form of CAPTCHAs for humans to decipher. More specifically, each word that cannot be read correctly by OCR is placed on an image and used as a CAPTCHA. This is possible because most OCR programs alert you when a word cannot be read correctly. <br /><br />But if a computer can't read such a CAPTCHA, how does the system know the correct answer to the puzzle? Here's how: Each new word that cannot be read correctly by OCR is given to a user in conjunction with another word for which the answer is already known. The user is then asked to read both words. If they solve the one for which the answer is known, the system assumes their answer is correct for the new one. The system then gives the new image to a number of other people to determine, with higher confidence, whether the original answer was correct."''
-−
 But if a computer can't read such a CAPTCHA, how does the system know the correct answer to the puzzle? Here's how: Each new word that cannot be read correctly by OCR is given to a user in conjunction with another word for which the answer is already known. The user is then asked to read both words. If they solve the one for which the answer is known, the system assumes their answer is correct for the new one. The system then gives the new image to a number of other people to determine, with higher confidence, whether the original answer was correct."''
 This particular CAPTCHA system has plugins that allow it to be used with technologies such as ASP.Net, PHP, and ColdFusion (see below): http://www.google.com/recaptcha/whyrecaptcha
 ===Securimage===
 Another good, free option is Secureimage for PHP which is available here: http://www.phpcaptcha.org/

@@ Line 24: / Line 24: @@
 #Create and place the file "recaptcha.cfm" in your custom tag folder or in the directory where the form file exists. If you need a custom tag path created, you can [[ColdFusion_Tips_%26_Tricks#Per-Application_Custom_Tag_Paths|follow these steps]]. For this example I created the recaptcha.cfm file and placed it in the folder with the form.
-NOTE: We recommend creating a custom error page - this prevents errors from revealing your public and private key if there are any errors with the form. Our [[https://wiki.hostek.com/Error_Handling#ColdFusion|ColdFusion Error Handling wiki]] shows how to do this.
+NOTE: We recommend creating a custom error page - this prevents errors from revealing your public and private key if there are any errors with the form. Our [[Error_Handling#ColdFusion|ColdFusion Error Handling wiki]] shows how to do this.
 ===Implementation===
 #Create the form for capturing user data such as a contact form submission. If you have not already done this, you can follow this [http://help.adobe.com/en_US/ColdFusion/10.0/Developing/WSc3ff6d0ea77859461172e0811cbec22c24-7bd2.html cfform tutorial from Adobe].

← Older revision		Revision as of 18:57, 9 February 2013
Line 1:		Line 1:
−	To prevent bots from "hijacking" your email forms, we recommend using a CAPTCHA. This is a technology that requires human interaction before it allows the user to submit a form. There are several implementations of ~~this~~ available, but a great choice is ReCAPTCHA. ~~This particular CAPTCHA system has plugins that allow~~ it to ~~be used with technologies such as ASP.Net or PHP: http://www.google~~.~~com/recaptcha/whyrecaptcha~~	+	==What is a CAPTCHA?==
		+	To prevent bots from "hijacking" your email forms, we recommend using a CAPTCHA. This is a technology that requires human interaction before it allows the user to submit a form.
		+	==Popular CAPTCHA Software==
		+	===ReCAPTCHA===
		+	There are several CAPTCHA implementations of available, but a great choice is ReCAPTCHA. Not only does it stop spammers from using a form for sending their emails it also takes the energy and time already being spent to translate printed material into digital material.

		+	''"About 200 million CAPTCHAs are solved by humans around the world every day. In each case, roughly ten seconds of human time are being spent. Individually, that's not a lot of time, but in aggregate these little puzzles consume more than 150,000 hours of work each day."''
		+
		+	''"reCAPTCHA improves the process of digitizing books by sending words that cannot be read by computers to the Web in the form of CAPTCHAs for humans to decipher. More specifically, each word that cannot be read correctly by OCR is placed on an image and used as a CAPTCHA. This is possible because most OCR programs alert you when a word cannot be read correctly.
		+
		+	But if a computer can't read such a CAPTCHA, how does the system know the correct answer to the puzzle? Here's how: Each new word that cannot be read correctly by OCR is given to a user in conjunction with another word for which the answer is already known. The user is then asked to read both words. If they solve the one for which the answer is known, the system assumes their answer is correct for the new one. The system then gives the new image to a number of other people to determine, with higher confidence, whether the original answer was correct."''
		+
		+	This particular CAPTCHA system has plugins that allow it to be used with technologies such as ASP.Net, PHP, and ColdFusion (see below): http://www.google.com/recaptcha/whyrecaptcha
		+	===Securimage===
	Another good, free option is Secureimage for PHP which is available here: http://www.phpcaptcha.org/		Another good, free option is Secureimage for PHP which is available here: http://www.phpcaptcha.org/
		+
		+	==ReCAPTCHA for ColdFusion Forms==
		+	This example makes use of the popular ReCAPTCHA, a ''green'' alternative to the standard cfcaptcha tag.
		+	===Getting Started===
		+	#Signup for an account at Recaptcha
		+	#Provide a domain name where you'll be using reCaptcha.
		+	#Create key, for single or all domains.
		+	#Click on the "reCAPTCHA plugins and libraries", from there download the ColdFusion reCaptcha plugin. Alternatively, you can obtain the plugin at [http://recaptcha.riaforge.org/ RIAForge]
		+	#Create and place the file "recaptcha.cfm" in your custom tag folder or in the directory where the form file exists. If you need a custom tag path created, you can [[ColdFusion_Tips_%26_Tricks#Per-Application_Custom_Tag_Paths\|follow these steps]]. For this example I created the recaptcha.cfm file and placed it in the folder with the form.
		+
		+	NOTE: We recommend creating a custom error page - this prevents errors from revealing your public and private key if there are any errors with the form. Our [[https://wiki.hostek.com/Error_Handling#ColdFusion\|ColdFusion Error Handling wiki]] shows how to do this.
		+	===Implementation===
		+	#Create the form for capturing user data such as a contact form submission. If you have not already done this, you can follow this [http://help.adobe.com/en_US/ColdFusion/10.0/Developing/WSc3ff6d0ea77859461172e0811cbec22c24-7bd2.html cfform tutorial from Adobe].
		+	#Upload the form (I used the name "contact.cfm").<br />''Example form'':
		+	<pre style="white-space: pre-wrap">
		+	<cf_recaptcha
		+	privateKey="...your private key..."
		+	publicKey="...your public key..."
		+	action=check>
		+
		+	<!--- Heres where the email information is sent, set the TO and FROM below --->
		+	<cfif IsDefined("Form.oncethrough") AND #form.recaptcha# EQ "true">
		+	<cfmail
		+	to = "name@domain.com"
		+	from = "form@domain.com"
		+	subject = "Form submission!" >
		+
		+	Name: #form.firstname# #form.lastname#
		+	Email: #form.email#
		+	DOB: #form.dob#
		+	Address: #form.address#
		+	City: #form.city#
		+	State: #form.state#
		+	Zip: #form.zip#
		+	Phone: #form.phone#
		+	Note: #form.note#
		+	IP: #cgi.remote_addr#
		+	</cfmail>
		+	<!--- This information is returned to the user upon submission of the form. --->
		+	<cfoutput>#form.firstname#, your information was submitted successfully. We will be contacting you shortly.
		+	<br>Here's what we have recorded:
		+	<br>Name: #form.firstname# #form.lastname#
		+	<br>Email: #form.email#
		+	<br>Date of Birth: #form.dob#
		+	<br>Phone: #form.phone#
		+	<br>Address: #form.address#
		+	<br>City: #form.city#
		+	<br>State: #form.state#
		+	<br>Zip: #form.zip#
		+	<br>Note: #form.note#
		+	</cfoutput>
		+	<!--- If the user fails to validate the cfcaptcha they will be prompted to return to the contact form. Change the file name of your contact form here if different than contact.cfm --->
		+	<cfelseif IsDefined("Form.oncethrough") AND #form.recaptcha# EQ "false">
		+	<cfoutput>Please try again. Return to the <a href=contact.cfm>Contact Form</a></cfoutput>
		+	<cfelse>
		+	<!--- Start collecting the contact information in the form. --->
		+	<cfform>
		+	<h4>Thank you for visiting our site, please fill out fully so we can contact you.</h4>
		+	<cfoutput>
		+	<h4>Your IP Address #cgi.remote_addr#</h4>
		+	</cfoutput>
		+	First Name: <cfinput type = "Text" name = "firstname"
		+	message = "Please enter your first name."
		+	validate = "required" required = "Yes">
		+	<br>Last Name: <cfinput type = "Text" name = "lastname"
		+	message = "Please enter your last name."
		+	validate = "required" required = "Yes">
		+	<br>Email: <cfinput type = "text" name = "email"
		+	message = "Please enter your email address."
		+	validate = "email" required = "Yes">
		+	<br>Date of Birth: <cfinput type = "Text" name = "dob"
		+	message = "Please enter your date of birth."
		+	validate = "date" required = "Yes">
		+	<br>Phone: <cfinput type = "Text" name = "phone"
		+	validate = "telephone" required = "Yes">
		+	<br><br><b>Your address is optional!</b>
		+	<br>Address: <cfinput type = "Text" name = "address"
		+	required = "No">
		+	<br>Format: 123 Street ST, Tulsa, OK
		+	<br>City: <cfinput type = "Text" name = "city"
		+	validate = "zipcode" required = "No">
		+	<br>State: <cfinput type = "Text" name = "state"
		+	validate = "zipcode" required = "No">
		+	<br>Zip: <cfinput type = "Text" name = "zip"
		+	validate = "zipcode" required = "No">
		+	<br><br>Have something to say? <br><cfinput type = "text" style="height: 100px;" size = "50" name = "note"
		+	required = "No">
		+	<br><br>Check to confirm permission to contact you: <cfinput type = "checkbox" name = "contactallowed"
		+	message = "Please confirm you permission to contact you."
		+	validate = "required" required = "Yes">
		+	<cf_recaptcha
		+	privateKey="...your private key..."
		+	publicKey="...your public key..."
		+	theme="white">
		+	<p><cfinput type = "submit" name = "submit" value = "Submit">
		+	<cfinput type = "hidden" name = "oncethrough" value = "Yes"></p>
		+	</cfform>
		+	</cfif></pre>
		+
		+	This example collects the Name, Email, DOB, Address, City, State, Zip, Phone, Note, IP of the submitter. Some fields are optional, so if there's something you DON'T need to collect, just remove it from between the cfform, cfmail, and cfoutput sections.