Context: CAPTCHA has changed the way websites keep user accounts safe and their data protected. From simple text-based challenges to the advanced reCAPTCHA systems we use today, CAPTCHA has made a big difference in online security.
Relevance of the Topic: Prelims: Key facts related to CAPTCHA.
About CAPTCHA
- CAPTCHA stands for Completely Automated Public Turing test to tell Computers and Humans Apart.
- Introduced in the early 2000s, when the internet was flooded with automated bots. These bots made fake accounts, spammed websites, and stole data. CAPTCHA helps keep websites safe from automated attacks and makes online services more user-friendly.
How does CAPTCHA work?
- CAPTCHA works by a challenge that is easy for humans but hard for bots. By using these challenges, CAPTCHA helps websites tell real users apart from bots. E.g., Task to read distorted text; select pictures with specific objects, like cars or traffic lights.
Uses of CAPTCHA
- CAPTCHA keeps the internet safe by making sure that only real people can access certain parts of websites.
- It can be used in: contact forms, comment sections, registration pages to stop bots from spamming, during sign-ups, logins, or purchases.
Limitations of CAPTCHA
- AI bots are trained to solve problems like human users would. As bots improve with machine learning, they can trick or bypass CAPTCHA systems.
- CAPTCHA can be difficult for people with disabilities.