What is BotDetect ASP.NET CAPTCHA?

CAPTCHA is an acronym for Completely Automated Public Turing Test to Tell Computers and Humans Apart. As the name suggests, it's a kind of test that can reliably determine is the solver human, allowing webmasters to tell bots and humans apart.

Captcha software is a program automatically generating and grading Captcha tests that:

  • Most people (i.e. real human users) can easily pass
  • Current bots (i.e. various computer programs) can't pass

Bots are the Problem and CAPTCHA is the Solution

With the exponential growth of online services and businesses, website security has become a serious concern for webmasters and web application developers.

The Problem: Bots

Many software programs are written and used to impersonate human beings, mimic their surfing patterns, and imitate their online activities for various malicious purposes. These "pretending to be human" programs are referred to as bots (short for "robots"), spambots or spam bots (since they are most commonly used for spamming).

The Solution: CAPTCHA

BotDetect Captcha is an efficient out-of-the-box security solution designed to deal with this threat, available as an ASP.NET Captcha Control for .NET web applications.

BotDetect CAPTCHA Component v3 Security

Using Captcha images specifically designed to be out of the reach of currently available computer vision and OCR technologies, bots can be prevented from accessing protected website functionality.

While computer programs cannot read the textual code from the image, it is easy to read for most humans. So the answer to the webmaster's question "is the current client submitting this page a real person, and not a bot?" will be the same as the Captcha validation result.

To keep websites accessible to the blind and people with impaired vision – for whom reading the Captcha images could be a problem – BotDetect also provides a sound Captcha alternative, pronouncing the textual code to users who prefer to hear it.

More about ASP.NET integration

The most of info you are going to need to integrate BotDetect with your ASP.NET website you will find on the following links:

BotDetect ASP.NET integrations with MVC (including Razor views) is already done while WebPages integration is expected to follow soon.

BotDetect CAPTCHA Applications

BotDetect CAPTCHA Uses
  • Prevent automated spam submission: BotDetect Captcha images ensure that an email, blog comment, forum post, guestbook entry or social networking message is sent by a human, not a bot.
  • Prevent automated registrations: BotDetect Captcha images block bots that sign up for thousands of email, forum or social networking accounts every minute.
  • Prevent automated friend requests: BotDetect Captcha images block bots that send thousands of fake friend requests on social networking and instant messaging sites every minute.
  • Secure login pages: BotDetect Captcha images prevent dictionary attacks and brute force attacks trying to guess login information
  • Block malicious crawlers: BotDetect Captcha images guarantee that bots trying to leech content or find vulnerabilities to exploit won't access protected website sections.
  • Prevent poll manipulation: BotDetect Captcha images protect online polls by ensuring only humans can vote and automated voting scripts can't manipulate the results.
  • Prevent resource harvesting: BotDetect Captcha images protect online games and virtual worlds with economic systems from automated virtual resource ("gold") harvesting.
  • Prevent cheating in contests: BotDetect Captcha images protect skill-based online games from fraudulent users who employ bots to achieve unfair advantage over other players.

BotDetect, and other Captchas Accessibility Guidelines

ASP.NET

source: wikipedia.org

ASP.NET is an open-source server-side Web application framework designed for Web development to produce dynamic Web pages. It was developed by Microsoft to allow programmers to build dynamic web sites, web applications and web services.

It was first released in January 2002 with version 1.0 of the .NET Framework, and is the successor to Microsoft's Active Server Pages (ASP) technology. ASP.NET is built on the Common Language Runtime (CLR), allowing programmers to write ASP.NET code using any supported .NET language.

ASP.NET is in the process of being re-implemented as a modern and modular web framework, together with other frameworks like Entity Framework. The new framework will make use of the new open-source .NET Compiler Platform (code-name "Roslyn") and be cross platform. ASP.NET MVC, ASP.NET Web API, and ASP.NET Web Pages (a platform using only Razor pages) will merge into a unified MVC 6. The project is called "ASP.NET vNext".