{"id":15653,"date":"2025-04-15T05:19:45","date_gmt":"2025-04-15T05:19:45","guid":{"rendered":"https:\/\/exam.pscnotes.com\/current-affairs\/?p=15653"},"modified":"2025-04-15T05:21:30","modified_gmt":"2025-04-15T05:21:30","slug":"captcha-2","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/current-affairs\/captcha-2\/","title":{"rendered":"CAPTCHA"},"content":{"rendered":"<ul>\n<li>\n<p><strong>CAPTCHA Definition:<\/strong> A challenge-response test designed to differentiate humans from bots, bolstering online security.<\/p>\n<\/li>\n<li>\n<p><strong>Origin &amp; Evolution:<\/strong> Developed in the early 2000s by Luis von Ahn and others. Started with distorted text, evolved to reCAPTCHA (digitizing books), and then Invisible reCAPTCHA (behavioral analysis by Google).<\/p>\n<\/li>\n<li>\n<p><strong>Functionality:<\/strong> CAPTCHA presents tasks easy for humans (image recognition, solving distorted text) but hard for bots, leveraging the Turing Test concept.<\/p>\n<\/li>\n<li>\n<p><strong>Advantages:<\/strong> Prevents fake accounts, spam, and data theft, ensuring human access to digital <div class=\"telegram-channel-container\">\r\n        <a href=\"https:\/\/t.me\/pscnotes2025\" target=\"_blank\" class=\"telegram-channel-button\">\r\n            <span class=\"telegram-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 496 512\">\r\n                    <path fill=\"white\" d=\"M248,8C111,8,0,119,0,256s111,248,248,248s248-111,248-248S385,8,248,8z M362,177L320,367c-3,14-10,18-20,14l-56-41l-27,26 c-3,3-5,5-10,5l4-63L323,196c5-5-1-7-8-3l-98,62l-42-13c-9-3-10-9,2-14l162-63C351,160,365,164,362,177z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Join Our Telegram Channel\r\n        <\/a>\r\n    <\/div> platforms.<\/p>\n<\/li>\n<li>\n<p><strong>Applications:<\/strong> Used in logins, registrations, transactions, comments, account recovery, and surveys. reCAPTCHA aided book digitization.<\/p>\n<\/li>\n<li>\n<p><strong>Limitations:<\/strong> Accessibility issues for disabled users (audio CAPTCHAs are not always sufficient for hearing-impaired), can be tedious <div class=\"youtube-subscribe-container\">\r\n        <a href=\"https:\/\/www.youtube.com\/channel\/UCNHT8lW-JmLC68rjBfZhdkg?sub_confirmation=1\" target=\"_blank\" class=\"youtube-subscribe-button\">\r\n            <span class=\"youtube-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 576 512\">\r\n                    <path d=\"M549.7 124.1c-6.3-23.7-24.8-42.3-48.3-48.6C458.8 64 288 64 288 64S117.2 64 74.6 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Subscribe on YouTube\r\n        <\/a>\r\n    <\/div> on mobile, and susceptible to bypass by sophisticated bots.<\/p>\n<\/li>\n<li>\n<p><strong>Evolving Challenges:<\/strong> As bots become more advanced (using machine learning), CAPTCHAs need to adapt.<\/p>\n<\/li>\n<li>\n<p><strong>Future Directions:<\/strong> CAPTCHA must balance security with accessibility and user-friendliness to remain relevant in digital security.<\/p>\n<\/li>\n<li>\n<p><strong>Alternative Security Measures:<\/strong> Two-Factor Authentication (2FA), biometric verification, honeypots, and behavioral biometrics offer alternative security layers.<\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>CAPTCHA Definition: A challenge-response test designed to differentiate humans from bots, bolstering online security. Origin &amp; Evolution: Developed in the early 2000s by Luis von Ahn and others. Started with distorted text, evolved to reCAPTCHA (digitizing books), and then Join Our Telegram Channel Invisible reCAPTCHA Subscribe on YouTube (behavioral analysis by Google). Functionality: CAPTCHA presents &#8230; <a title=\"CAPTCHA\" class=\"read-more\" href=\"https:\/\/exam.pscnotes.com\/current-affairs\/captcha-2\/\">Read more <span class=\"screen-reader-text\">CAPTCHA<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":15680,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[595],"tags":[1276],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>CAPTCHA - Current Affairs Exam<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/current-affairs\/captcha-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"CAPTCHA\" \/>\n<meta property=\"og:description\" content=\"CAPTCHA Definition: A challenge-response test designed to differentiate humans from bots, bolstering online security. Origin &amp; Evolution: Developed in the early 2000s by Luis von Ahn and others. Started with distorted text, evolved to reCAPTCHA (digitizing books), and then Invisible reCAPTCHA (behavioral analysis by Google). Functionality: CAPTCHA presents tasks easy for humans (image recognition, solving ... 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Origin &amp; Evolution: Developed in the early 2000s by Luis von Ahn and others. Started with distorted text, evolved to reCAPTCHA (digitizing books), and then Invisible reCAPTCHA (behavioral analysis by Google). Functionality: CAPTCHA presents tasks easy for humans (image recognition, solving ... 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