=== KeyCAPTCHA - Free interactive CAPTCHA service === Contributors: ITNP, Jsc Author URI: https://www.keycaptcha.com Tags: captcha, contact form 7, comments, register, registration, spam protection, antispam, protection, anti-spam, spam, security, best captcha, comment, registration form, interactive captcha, game, captcha security, capatcha, security captcha, captsha, captcha plugin, keycaptcha, captcha game, capcha, kapcha, kaptcha, captcha puzzle Requires at least: 2.7 Tested up to: 3.0.2 Stable tag: trunk Interactive CAPTCHA is the free unique anti-spam solution for your site. == Description == = General Information = KeyCPTCHA is a free service providing effective protection by means of highly attractive and interactive CAPTCHA. Also, it can entertain your visitors with a nice and pleasant CAPTCHA game. A visitor of your site is offered not to guess the CAPTCHA content but restore some objects of the task provided and thus it makes interactivity of our CAPTCHA positively different from the other CAPTCHA plugins. One of the tasks of our CAPTCHA, as an example, asks a visitor to place some cups on saucers to their match in colour and design pattern. = Integration with WordPress = Our CAPTCHA protects the following forms: ---------------------------------------- * Registration form * Comment form * Login form * Lost password form * Contact Form 7 = ATTENTION = TO INSTALL OUR CAPTCHA YOU HAVE TO FOLLOW INSTRUCTIONS IN "INSTALLATION" TAB. OTHERWISE THE CAPTCHA WON'T WORK CORRECTLY. = Effective Protection = Our service uses geo-cluster including servers located in different data-centers of Europe to work. Some of the servers are in DDoS stable data-centers in Switzerland, which provide reliable work of the service in 24x7x365 mode. Spam bots can't do anything against security system of KeyCAPTCHA by the following reasons: ------------------------------------------------------------------------------------------ * All the objects of our CAPTCHA are received in a random order from KeyCAPTCHA servers being cut into random number of pieces, each of them differs in width and height. * Immovable CAPTCHA objects are placed randomly. KeyCAPTCHA servers are in charge of the immovable objects display. * There's no information about the right answer on the page protected by KeyCAPTCHA at all. * KeyCAPTCHA servers check weather the solution was right or not. * The data exchange is protected by digital signature, which is calculated in your web server and KeyCAPTCHA servers only. * Each message received by your sever or KeyCAPTCHA servers is checked to see whether the digital signature is correct. * We use a password of variable length (112-165 bits) to calculate digital signature and it is stored in your web server and KeyCAPTCHA servers only. * If there are too many requests from one and the same IP address, the queries from that IP are automatically 10 minutes blocked. * KeyCAPTCHA is a program code executing in a visitor's web-browser not a static picture typical for other ordinary CAPTCHAs, which are always easily discovered by spam bots. * Having our CAPTCHA received it's impossible to transfer it to third parties to complete the task, the way spammers usually use bypassing ordinary CAPTCHAs. To protect a task against third parties a visitor's IP address is included into digital signature calculation. * Probability of guessing the answer by random positioning of the CAPTCHA movable objects equals 1/30 000 000. * Anonymous proxy server filtration is a unique service of KeyCAPTCHA. It allows blocking messages from visitors using anonymous proxy servers. The list of anonymous proxy servers is updated every hour and contains thousands of unique addresses spammers usually use to work. This service makes the against-spam protection of your site MUCH stronger. If a spammer does the task of our CAPTCHA manually using an anonymous proxy server, he or she won't be able to send spam as it will be blocked by our server. Users of Extended account only can activate anonymous proxy servers filtration. Moreover it's not necessary to send direct outgoing requests from your web-server to KeyCAPTCHA servers compared to other popular systems of protection. This enables to use our CAPTCHA in hosting platforms with locked outgoing requests and these are the majority of big and popular hosting platforms == Installation == 1. Register on our site (https://www.keycaptcha.com/accounts/reguser). 1. Activate your account by clicking the activation link, which is sent to the e-mail you specified during registration. 1. Log in to our site. 1. On the page "My Sites" please add information about your site, which you plan to protect with our CAPTCHA. 1. On the page "General Settings" in your account on our site please specify WordPress as the value of "CMS" field and choose the version of your WordPress. 1. Choose "Installation Instructions" in the right menu "Free Account" 1. Follow the CAPTCHA installation instructions on the opened page. == Frequently Asked Questions == = I see a message "Incorrect web-server sign" instead CAPTCHA. = Please do the following steps: * Login to our site https://www.keycaptcha.com * Open "My Sites" page * Click "Edit site settings" link in the appropriate row of the table * Choose "Additional settings" in the right menu * Check "Disable IP control" box * Click "Save" button * Wait 1 minute * Reload the page of your site with CAPTCHA == Screenshots == 1. KeyCAPTCHA on registration form 2. Our CAPTCHA on comments 3. Our CAPTCHA on Contact Form 7 4. Our CAPTCHA on login form 5. Our CAPTCHA on lost password form 6. Our CAPTCHA for people who can hardly differentiate this or that tint and/or color 7. Page with KeyCAPTCHA settings == ATTENTION == TO INSTALL OUR CAPTCHA YOU HAVE TO FOLLOW INSTRUCTIONS IN "INSTALLATION" TAB. OTHERWISE THE CAPTCHA WON'T WORK CORRECTLY. == Changelog == = 2.0.2 = * Fixed bug with conversion of strings with quotes = 2.0.1 = * Fixed bug with empty KeyCAPTCHA settings = 2.0.0 = * Added CAPTCHA on login form * Added CAPTCHA on lost password form * Added an integration with Contact Form 7 = 1.5.0 = * The first official release on WordPress.org * CAPTCHA for registration form * CAPTCHA for comment form