{"id":6620,"date":"2021-11-03T19:48:57","date_gmt":"2021-11-03T10:48:57","guid":{"rendered":"http:\/\/52.205.251.174\/blog\/2fa-mfa-user-authentication-is-it-secure\/"},"modified":"2021-11-29T17:43:03","modified_gmt":"2021-11-29T08:43:03","slug":"2fa-mfa-user-authentication-is-it-secure","status":"publish","type":"post","link":"https:\/\/www.dualauth.com\/ko\/blog\/2fa-mfa-user-authentication-is-it-secure\/","title":{"rendered":"2FA &amp; MFA \uc0ac\uc6a9\uc790 \uc778\uc99d: \uc548\uc804\ud55c\uac00?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"6620\" class=\"elementor elementor-6620 elementor-69\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1780a92 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1780a92\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7d058947\" data-id=\"7d058947\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3a1aef78 elementor-widget elementor-widget-text-editor\" data-id=\"3a1aef78\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><\/p>\n<p>2FA\/MFA\ub97c \ud3ec\ud568\ud55c \uc0ac\uc6a9\uc790 \uc778\uc99d \uae30\uc220\uc740 \uae30\uc874 \uc0ac\uc6a9\uc790 \ube44\ubc00\ubc88\ud638\ubcf4\ub2e4 \ub354 \uc548\uc804\ud55c \uac83\uc73c\ub85c \uc54c\ub824\uc838 \uc788\uc9c0\ub9cc \uc774\ub7ec\ud55c \uae30\uc220\uc740 \uc5ec\uc804\ud788 \uc704\uc870 \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc5d0 \ub9e4\uc6b0 \ucde8\uc57d\ud558\uace0 \uc774\uc804 \uba87 \ub144 \ub3d9\uc548 \uace0\uc804\ud588\ub2e4. \ucd5c\uadfc \uc0ac\uc6a9\uc790 \uc778\uc99d \uae30\uc220\uc740 \uc0ac\uc6a9\uc790\uc758 \uc778\uc99d(\uc608: \ube44\ubc00\ubc88\ud638)\ub9cc \ud655\uc778\ud55c\ub2e4. \ub530\ub77c\uc11c \uc0ac\uc6a9\uc790\uac00 \uba3c\uc800 \uac00\uc9dc \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc5d0 \uc811\uc18d\ud558\uba74 \uac00\uc9dc \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc5d0 \uc790\uaca9 \uc99d\uba85\uc744 \ubd80\uc5ec\ud55c \ub2e4\uc74c \ubcf8\uc778\ub3c4 \ubaa8\ub974\ub294 \uc0ac\uc774\uc5d0 SMS \ucf54\ub4dc, OTP \ucf54\ub4dc, \ubaa8\ubc14\uc77c \ud478\uc2dc \uc54c\ub9bc \uc2b9\uc778, \uc9c0\ubb38 \ub610\ub294 \ud64d\ucc44 \uc2a4\uce94\uc73c\ub85c \uc561\uc138\uc2a4\ub97c \uc778\uc99d\ud558\uac8c \ub41c\ub2e4. \ub530\ub77c\uc11c \uc6b0\ub9ac\uac00 \uc9c4\uc9dc \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc5d0 \uc5f0\uacb0\ud558\uace0 \uc788\ub2e4\uace0 \uac00\uc815\ud558\uae30 \ub54c\ubb38\uc5d0 \uc6b0\ub9ac\uac00 \uc5b4\ub514\uc5d0\/\ub204\uad6c\uc5d0\uac8c \uc5f0\uacb0\ud558\ub294\uc9c0 100% \ud655\uc2e0\ud558\ub294 \uac83\uc740 \uad49\uc7a5\ud788 \uc5b4\ub835\ub2e4.<\/p>\n<p><\/p>\n<p>\uac00\uc9dc \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc640 \uc2f8\uc6b0\uae30 \uc704\ud574 \uc0ac\uc6a9\uc790\ub294 \uc628\ub77c\uc778 \uc11c\ube44\uc2a4 \uc778\uc99d\uc790\uc640 \uac19\uc740 \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc758 \uc9c4\uc704\ub3c4 \ud655\uc778\ud574\uc57c \ud55c\ub2e4\ub2e4. \uc9c0\uae08\uae4c\uc9c0\ub294 SSL \uc778\uc99d\uc11c\ub85c\ub9cc \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc758 \uc9c4\uc704 \uc5ec\ubd80\ub97c \ud655\uc778\ud560 \uc218 \uc788\uc5c8\ub2e4. SSL \uc778\uc99d\uc11c\ub294 \uc0ac\uc6a9\uc790\uc5d0\uac8c \uc6f9 \ube0c\ub77c\uc6b0\uc800\uc5d0 \ubcf4\uc548 \ub4e4\uc5ec\uc4f0\uae30\ub85c \ub179\uc0c9 \uc790\ubb3c\uc1e0 \uae30\ud638\ub97c \ud45c\uc2dc\ud55c\ub2e4.<\/p>\n<p><\/p>\n<p>\uadf8\ub7ec\ub098 \uc774 \uc790\ubb3c\uc1e0\ub97c \uc9c4\uc815\ud55c \uc11c\ube44\uc2a4\uc758 \uc9c0\ud45c\ub85c \uc0ac\uc6a9\ud558\ub294 \uac83\uc774 \ud56d\uc0c1 \uc26c\uc6b4 \uac83\uc740 \uc544\ub2c8\ub2e4. \ub54c\ub54c\ub85c \uc0ac\uc6a9\uc790\ub294 \uc2e4\uc81c SSL \uc778\uc99d\uc11c\uac00 \uc788\uc9c0\ub9cc \uc720\uc0ac\ud55c \ub3c4\uba54\uc778\uc744 \uc0ac\uc6a9\ud558\ub294 \uac00\uc9dc \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\ub97c \ub9cc\ub0a0 \uc218 \uc788\ub2e4. \uadf8\ub807\ub2e4\uba74 \ub3d9\uc77c\ud55c \ub514\uc790\uc778, \uc720\uc0ac\ud55c \ub3c4\uba54\uc778 \ubc0f \uc815\ud488 SSL \uc778\uc99d\uc11c\uac00 \uc788\ub294 \uacbd\uc6b0 \ud574\ub2f9 \uc11c\ube44\uc2a4\uac00 \uc815\ud488\uc778\uc9c0 \uc5b4\ub5bb\uac8c \uc54c \uc218 \uc788\ub294\uac00? \ub610\ud55c SSL \uc778\uc99d\uc11c\ub294 \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\ub97c \uc778\uc99d\ud558\uae30 \uc704\ud55c \uac80\uc99d \uc218\ub2e8\uc774 \uc544\ub2cc \uc0ac\uc6a9\uc790\uc640 \uc6f9 \uc11c\ubc84 \uac04\uc758 \uc548\uc804\ud55c \ub370\uc774\ud130 \uc804\uc1a1 \uacc4\uce35\uc73c\ub85c \uc8fc\ub85c \uc0ac\uc6a9\ub41c\ub2e4. \ub530\ub77c\uc11c \uc0ac\uc6a9\uc790\uac00 \ub4f1\ub85d\ub41c \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc758 \uc9c4\uc704 \uc5ec\ubd80\ub97c \ud655\uc778\ud560 \uc218 \uc788\ub294 \uc194\ub8e8\uc158\uc744 \uc81c\uacf5\ud558\uc9c0 \uc54a\uace0 \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc5d0\uc11c \uacc4\uc18d\ud574\uc11c \uac01 \uc0ac\uc6a9\uc790\uc758 \uc9c4\uc704 \uc5ec\ubd80\ub97c 2~3\ubc88\uc529 \ud655\uc778\ud55c\ub2e4\uba74, \ubcf4\uc548\uc744 \uc804\ud600 \uac15\ud654\ud558\uc9c0 \uc54a\uace0 \uc0ac\uc6a9\uc790\uc758 \ubd80\ub2f4\ub9cc \uac00\uc911\uc2dc\ud0ac \ubfd0\uc774\ub2e4.<\/p>\n<p><\/p>\n<p>\uc5c4\ubc00\ud788 \ub9d0\ud558\uba74, \ubaa8\ub4e0 \uc885\ub958\uc758 \uc0ac\uc6a9\uc790 \uc778\uc99d\uae30\ub294 \uc0ac\uc6a9\uc790\uac00 \uc544\ub2cc \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc758 \ubcf4\uc548\uc744 \uc704\ud574 \uc124\uacc4\ub418\uc5c8\uc73c\uba70, \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc758 \uc774\uc775\uc744 \uc704\ud574 \uc0ac\uc6a9\uc790 \uc554\ud638\ub97c \uc81c\uc2dc\ud560 \ubfd0\ub9cc \uc544\ub2c8\ub77c \ub9e4\uc6b0 \ubd88\ud3b8\ud55c 2FA\/MFA \ubc29\uc2dd\uc744 \uc0ac\uc6a9\ud558\uac8c \ub41c\ub2e4. \ub530\ub77c\uc11c \uae30\uc874\uc758 \uc0ac\uc6a9\uc790 \uc778\uc99d\uc740 \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\ub97c \ubcf4\ud638\ud558\uae30\uc5d0\ub294 \uc801\uc808\ud558\uc9c0\ub9cc, \uc5ec\uc804\ud788 \uac00\uc9dc \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc5d0 \ucde8\uc57d\ud558\uace0 \uc0ac\uc6a9\uc790\uc5d0\uac8c \ube44\ubc00\ubc88\ud638 \ubd80\ub2f4\uc744 \uacc4\uc18d \uc8fc\uace0 \uc788\ub2e4. <a href=\"https:\/\/www.theregister.co.uk\/2018\/01\/17\/no_one_uses_two_factor_authentication\">\uc774\ub294 \uc5ed\uc0ac\uc0c1 \ucd5c\uc545\uc758 \uac1c\uc778\uc815\ubcf4 \uce68\ud574\uac00 \ubc1c\uc0dd\ud55c \uc2dc\ub300\uc5d0 Gmail \uc0ac\uc6a9\uc790\uc758 10% \ubbf8\ub9cc\uc774 OTP \uc778\uc99d\uae30\ub97c \ucc44\ud0dd\ud55c \uc774\uc720\ub97c \uc124\uba85\ud55c\ub2e4.<\/a><\/p>\n<p><\/p>\n<p>\uc6b0\ub9ac\uac00 \uc790\uc2e0\uc744 \uc704\ud574 \ub2e4\uc591\ud55c \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\ub97c \uc120\ud0dd\ud558\ub294 \uac83\uc744 \uc88b\uc544\ud558\ub294 \uac83\ucc98\ub7fc, \uc6b0\ub9ac\ub3c4 \uc62c\ubc14\ub978 \uc778\uc99d \uae30\uc220\uc744 \uc120\ud0dd\ud574\uc57c \ud55c\ub2e4. \uae30\uc220\uc740 \uc0ac\uc6a9\uc790\uc758 \ubd80\ub2f4\uc744 \uc904\uc5ec\uc904 \ubfd0\ub9cc \uc544\ub2c8\ub77c \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc758 \ubcf4\uc548\uc744 \uc704\ud611\ud558\uc9c0 \uc54a\uc73c\uba74\uc11c \ubcf4\uc548\uc744 \uac15\ud654\ud574\uc57c \ud55c\ub2e4. \uc774 \uacbd\uc6b0 AutoPassword\ub294 \uc0ac\uc6a9\uc790\uac00 \ubd88\ud3b8\ud55c \ucf54\ub4dc\ub97c \uc785\ub825\ud558\uc9c0 \uc54a\uace0 \uba3c\uc800 \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc758 \uc9c4\uc704\ub97c \ud655\uc778\ud558\uace0 \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc5d0\uc11c \ub0b4\ubd80\uc801\uc73c\ub85c \uc0ac\uc6a9\uc790\uc758 \uc9c4\uc704\ub97c \ub3d9\uc2dc\uc5d0 \ud655\uc778\ud558\ub294 \ucd5c\ucd08\uc758 \uc778\uc99d \uae30\uc220\uc774\ub2e4.<\/p>\n<p><\/p>\n<p>AutoPassword \uae30\uc220\uc774 \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc5d0 \uc801\uc6a9\ub418\ub294 \uacbd\uc6b0 \ud574\ub2f9 \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\ub294 \uc0ac\uc6a9\uc790\uac00 \uc0ac\uc6a9\uc790 ID\ub97c \uc785\ub825\ud55c \ud6c4 \uc554\ud638 \ud544\ub4dc\uc5d0 AutoPassword \ucf54\ub4dc\ub97c \uc790\ub3d9\uc73c\ub85c \uc0dd\uc131\ud55c\ub2e4. \uc774\ub97c \ud1b5\ud574 \uc0ac\uc6a9\uc790\ub294 \uc2a4\ub9c8\ud2b8\ud3f0\uc73c\ub85c \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc758 \uc9c4\uc704 \uc5ec\ubd80\ub97c \ud655\uc778\ud560 \uc218 \uc788\ub2e4.<\/p>\n<p><\/p>\n<p>\ub450 \ucf54\ub4dc\uac00 \uc77c\uce58\ud558\uba74 \uc0ac\uc6a9\uc790\ub294 \uc2a4\ub9c8\ud2b8\ud3f0\uc5d0\uc11c \uc9c0\ubb38\uc744 \ud130\uce58\ud558\uae30\ub9cc \ud558\uba74 \ub418\uba70 \uc694\uccad\uc740 \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc758 \uc815\ud488 \uc778\uc99d\uc73c\ub85c \uc2b9\uc778\ub41c\ub2e4.<\/p>\n<p><\/p>\n<p>\uc0ac\uc6a9\uc790\uac00 \ubaa8\ubc14\uc77c\uc5d0 \uc9c0\ubb38\uc744 \ud130\uce58\ud558\uba74 \ub0b4\ubd80\uc801\uc73c\ub85c \uc778\uc99d \ucf54\ub4dc\ub97c \uc11c\ubc84\ub85c \uc804\uc1a1\ud55c\ub2e4. AutoPassword\ub294 OTP, PKI, FIDO\uc640 \uac19\uc740 \uae30\uc874 \uc0ac\uc6a9\uc790 \uc778\uc99d \uae30\uc220\uc5d0 \ubcf4\uc548 \uacc4\uce35\uc744 \ucd94\uac00\ud558\uc5ec \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc5d0\uc11c\ub3c4 \uae30\uc874 2FA\/MFA \uae30\uc220\uacfc \uac19\uc774 \uc0ac\uc6a9\uc790\uc758 \uc9c4\uc704 \uc5ec\ubd80\ub97c \ud655\uc778\ud560 \uc218 \uc788\ub2e4.<\/p>\n<p><\/p>\n<p>\uc5c4\ubc00\ud788 \ub9d0\ud558\uc790\uba74 AutoPassword\ub294 \uc0c1\ud638 \uc778\uc99d \uae30\uc220\uc774\uc9c0\ub9cc \uc0ac\uc6a9\uc790\uc5d0\uac8c \uc778\uc99d \uad8c\ud55c\uc744 \ubd80\uc5ec\ud558\ub294 \uc11c\ube44\uc2a4 \uc778\uc99d \uc11c\ube44\uc2a4\ucc98\ub7fc \ubcf4\uc778\ub2e4. \uc0ac\uc6a9\uc790\uac00 \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc5d0 \uc811\uadfc\ud558\uae30 \uc704\ud574 \ubd88\ud3b8\ud55c \ucf54\ub4dc\ub97c \uc785\ub825\ud560 \ud544\uc694\uac00 \uc5c6\uc744 \ubfd0\ub9cc \uc544\ub2c8\ub77c, \uc0ac\uc6a9\uc790\uac00 \uac00\uc9dc \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc5d0 \ud76c\uc0dd\ub418\uc9c0 \uc54a\ub3c4\ub85d \ubcf4\uc548\uc744 \uac15\ud654\ud55c\ub2e4.<\/p>\n<p><\/p>\n<p>\uae30\uc874 \uc778\uc99d \uae30\uc220\uc740 \uc0ac\uc6a9\uc790\uac00 \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\ub97c \uc804\ud600 \uc778\uc99d\ud560 \uc218 \uc5c6\ub3c4\ub85d \ud558\ub294 \ubc18\uba74, AutoPassword\ub294 Kerberos \ubc0f PKI\uc640 \uac19\uc740 \uae30\uc874\uc758 \ub2e4\ub978 \uc0c1\ud638 \uc778\uc99d \uae30\uc220\uc5d0 \ube44\ud574 \uc0ac\uc6a9\uc790\uac00 \ub208\uc73c\ub85c \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc758 \uc9c4\uc704 \uc5ec\ubd80\ub97c \ud655\uc778\ud560 \uc218 \uc788\ub3c4\ub85d \ud558\uace0, \uc0ac\uc6a9\uc790 ID\uc640 \uc554\ud638\ub97c \uc785\ub825\ud558\uc5ec \ud074\ub77c\uc774\uc5b8\ud2b8 \uc2dc\uc2a4\ud15c\uacfc \uc11c\ubc84 \uc2dc\uc2a4\ud15c \uc0ac\uc774\uc5d0\uc11c \ub0b4\ubd80\uc801\uc73c\ub85c\ub9cc \uc2e4\ud589\ub41c\ub2e4.<\/p>\n<p><\/p>\n<p>\uae30\uc874\uc758 \uc0c1\ud638 \uc778\uc99d \uae30\uc220\uc744 \uc0ac\uc6a9\ud558\ub354\ub77c\ub3c4 \uc0ac\uc6a9\uc790\uac00 \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc758 \uc9c4\uc704 \uc5ec\ubd80\ub97c \uba3c\uc800 \ud655\uc778\ud558\uc9c0 \ubabb\ud55c\ub2e4\uba74, \uc0ac\uc6a9\uc790\ub294 \uc5ec\uc804\ud788 \uac00\uc9dc \uc11c\ube44\uc2a4\uc758 \ud76c\uc0dd\uc591\uc774 \ub420 \uc218 \uc788\ub2e4. \uc2e4\uc81c\ub85c \uc0c1\ud638 \uc778\uc99d\uc744 \uc0ac\uc6a9\ud55c\ub2e4\uace0 \uc8fc\uc7a5\ud558\ub294 \uc77c\ubd80 \uae30\uc220\uc740 \uadf8\ub7ec\ud55c \ubaa9\uc801\uc73c\ub85c \uac1c\ubc1c\ub418\uc9c0\ub3c4 \uc54a\uc558\uc73c\uba70, \uc0ac\uc6a9\uc790\uac00 \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc758 \uc9c4\uc704 \uc5ec\ubd80\ub97c \ud655\uc778\ud558\uae30 \uc704\ud55c \uac83\uc774 \uc544\ub2c8\ub77c \ub3c4\uccad \ubc0f \uc7ac\uc0dd \uacf5\uaca9\uc744 \ubc29\uc9c0\ud558\uae30 \uc704\ud574 \ub9cc\ub4e4\uc5b4\uc84c\ub2e4.<\/p>\n<p><\/p>\n<p>\uc694\ucee8\ub300 2FA, MFA \ub4f1 \uae30\uc874 \uc778\uc99d \uae30\uc220\uc740 \uc0ac\uc6a9\uc790\uac00 \uc544\ub2cc \uc628\ub77c\uc778 \uc11c\ube44\uc2a4 \uc81c\uacf5\uc790\ub97c \ubcf4\ud638\ud558\uae30 \uc704\ud55c \uac83\uc774\ub2e4. \uc0ac\uc6a9\uc790\ub85c\uc11c \uc6b0\ub9ac\ub294 \uac00\uc9dc \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc758 \ud76c\uc0dd\uc591\uc774 \ub418\ub294 \uac83\uc744 \ubc29\uc9c0\ud558\uace0 \uc778\uc99d\uc758 \ubd80\ub2f4\uc744 \uc5c6\uc560\ub294 \uc0c8\ub85c\uc6b4 \uc194\ub8e8\uc158\uc774 \ud544\uc694\ud558\ub2e4.<\/p>\n<p><\/p>\n<p>AutoPassword\uc758 Smart-Two-Way \uc778\uc99d \uae30\uc220\uc740 &#8220;\uc0c1\ud638 2FA \ubc0f MFA&#8221;\uc758 \uc0c8\ub85c\uc6b4 \uc2dc\ub300\ub97c \uc5f4\uba70 \ubcf4\uc548\uacfc \ud3b8\uc758\uc131\uc744 \ubaa8\ub450 \uac16\ucd98 \ucd5c\uace0\uc758 \uc194\ub8e8\uc158\uc744 \uc81c\uacf5\ud55c\ub2e4.<\/p>\n<p><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>2FA\/MFA\ub97c \ud3ec\ud568\ud55c \uc0ac\uc6a9\uc790 \uc778\uc99d \uae30\uc220\uc740 \uae30\uc874 \uc0ac\uc6a9\uc790 \ube44\ubc00\ubc88\ud638\ubcf4\ub2e4 \ub354 \uc548\uc804\ud55c \uac83\uc73c\ub85c \uc54c\ub824\uc838 \uc788\uc9c0\ub9cc \uc774\ub7ec\ud55c \uae30\uc220\uc740 \uc5ec\uc804\ud788 \uc704\uc870 \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc5d0 \ub9e4\uc6b0 \ucde8\uc57d\ud558\uace0 \uc774\uc804 \uba87 \ub144 \ub3d9\uc548 \uace0\uc804\ud588\ub2e4. \ucd5c\uadfc \uc0ac\uc6a9\uc790 \uc778\uc99d \uae30\uc220\uc740 \uc0ac\uc6a9\uc790\uc758 \uc778\uc99d(\uc608: \ube44\ubc00\ubc88\ud638)\ub9cc \ud655\uc778\ud55c\ub2e4. \ub530\ub77c\uc11c \uc0ac\uc6a9\uc790\uac00 \uba3c\uc800 \uac00\uc9dc \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc5d0 \uc811\uc18d\ud558\uba74 \uac00\uc9dc \uc628\ub77c\uc778 \uc11c\ube44\uc2a4\uc5d0 \uc790\uaca9 \uc99d\uba85\uc744 \ubd80\uc5ec\ud55c \ub2e4\uc74c \ubcf8\uc778\ub3c4 \ubaa8\ub974\ub294 \uc0ac\uc774\uc5d0 SMS \ucf54\ub4dc, OTP \ucf54\ub4dc, 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