Integrates Hashcash.IO proof-of-work widget with login/registration/comment forms.

Abdussamad Abdurrazzaq

Hashcash for Contact Form 7

Add Hashcash spam protection to Contact Form 7.

pkaroukin

<p>This plugin will integrate jQuery plugin Hashcash.IO (https://github.com/hashcash/jquery.hashcash.io) to be used in combination with https://hashcash.io/ service.</p>
<p>Active development happens in GitHub repository – https://github.com/hashcash/wordpress-hashcash</p>
<p>Please report all issues at https://github.com/hashcash/wordpress-hashcash/issues</p>
<p>Because of the way plugins work, problem might arrise from specific combination of WP version, plugins, themes.<br />
Therefore for the best result everytime you submit a bug report or just seeking an advice please include following:</p>
<ul>
<li>Version of WordPress you are using</li>
<li>Brand and version of Browser you are using to test it</li>
<li>List of third-party plugins and their versions activated on your website</li>
<li>What theme and version you are using</li>
</ul>
<h3>Protect Against Web Spam</h3>
<p>Typically various “Internet SEO Companies” try to leverage poor forum software protection against mass submission and create many worthless posts with links to a website they are promoting.</p>
<p>Some forum and blog software implement various CAPTCHA solutions but these have two negative aspects:</p>
<ul>
<li>They annoy your visitors.</li>
<li>They provide a fake sense of security.</li>
<li>Today it is possible to buy access to API which solves any kind of CAPTCHA for just $0.70 per 1000 CAPTCHA images solved by a real human being. And do you really think your customer will be happy to try to solve one of these ridiculous CAPTCHAs?</li>
</ul>
<h3>Secure Against Brute Force Attacks</h3>
<p>Many modern applications are susceptible to brute force attacks. Take a typical login form, for example. Hackers can compromise account security by trying every possible password combination. They can also leverage a large network of proxy servers to paralelize this attack. Forcing their browser to work hard makes it too expensive and slow for hackers to perform a brute force attack.</p>
<h3>Based On Open Technologies</h3>
<p>We leverage the following features:</p>
<ul>
<li>Asm.js</li>
<li>HTML5</li>
<li>Web Workers</li>
</ul>
<p>Browsers supported:</p>
<ul>
<li>Google Chrome 28+</li>
<li>Mozilla Firefox 22+</li>
<li>Internet Explorer 10+</li>
<li>Opera 18+</li>
</ul>
<h3>Fully translatable</h3>
<p>All strings are available for translation</p>
<h3>Fully accessible</h3>
<p>We follow both common sense and accessibility guidelines to make this<br />
widget accessible to people with limited abilities. We make it focusable<br />
and actionable via Tab-Enter keys, as well as we have WAI-ARIA live region<br />
which updates blind user via screen reader about progress.</p>


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