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With the use of a captcha, the automated spamming and account creation process is grossly limited, or stopped completely. So, if there was no captcha to detect that an actual human was creating an email account, these guys and their bots would be left to do as they please- make the internet suck for everyone. These fake email accounts can then be used to create other fake accounts on other platforms and can also be sold to other spammers for all number of unethical/ illegal purposes. The reason being, some hackers create sophisticated ‘bots’ that are able to automatically create millions of fake email accounts in a small period of time. Many sites use captchas to detect that the person using the site is a real human, but one common example is their use on email account signup forms such as Gmail or Yahoo. Since computer programs can’t read images (yet) this keeps spam bots at bay. The idea behind this is that in order to read the text, you need to be an actual human. It’s a bit of a love hate relationship I guess.Īt the most basic level, a captcha is simply an image of text, rather than text itself. Most people (including me) don’t like them because they are annoying, but they play a massive role in keeping the web safe and running smoothly. The primary role of the captcha is to stop spam bots on websites.

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