「推測されやすい」パスワードを入力させないためにフロントエンドエンジニアができること

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ʮਪଌ͞Ε΍͍͢ʯύεϫʔυΛ ೖྗͤ͞ͳ͍ͨΊʹϑϩϯτΤϯ υΤϯδχΞ͕Ͱ͖Δ͜ͱ ϑϩϯτΤϯυ໊ݹ԰ vol. 11 2023/08/18

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༗ݶձࣾΞοϓϧοϓϧ ϑϩϯτΤϯυΤϯδχΞ CMSΛ։ൃ͍ͯ͠ΔΤϯδχΞɻϑϩϯτΤ ϯυ͕޷͖ɻPHPͰόοΫΤϯυ։ൃ΋͠· ͢ɻFrontend Nagoya ͱ͍͏ษڧձΛओ࠵͠ ͯ·͢ɻϙέϞϯͱອը͕޷͖ɻ ӉҪ ཮ొ @uidev1116

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ࠓ೔ͷ໨త • ʮਪଌ͞Ε΍͍͢ʯύεϫʔυΛೖྗͤ͞ͳ͍ͨΊͷϚʔΫΞοϓΛ஌Δ • ʮਪଌ͞Ε΍͍͢ʯύεϫʔυΛೖྗͤ͞ͳ͍ͨΊͷUIΛ஌Δ • ʮਪଌ͞Ε΍͍͢ʯύεϫʔυΛೖྗͤ͞ͳ͍ͨΊͷػೳΛ஌Δ

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ύεϫʔυ؅ཧͷ՝୊ World Password Day Survey 2023 (Bitwarden) ΑΓ

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52%

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58%

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🫠 ʮਪଌ͞Εʹ͍͘ʯύεϫʔυΛ ࢖ΘͤΔ࢓૊Έ͕ඞཁ

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ʮਪଌ͞Ε΍͍͢ʯύεϫʔυΛೖྗ ͤ͞ͳ͍ͨΊͷϚʔΫΞοϓΛ஌Δ

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ϒϥ΢β૊ΈࠐΈػೳͷϝϦοτΛڗडͰ͖Δ • ύεϫʔυϚωʔδϟʔ • ΞΫηγϏϦςΟ

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• ɺɺ Λ࢖༻͢Δ • type=“password" ΍ type=“email” ͳͲద੾ͳ input λά ͷܕΛ࢖༻͢Δ • new-password ΍ current-password, username, email ͳͲద੾ͳ autocomplete ଐੑΛ׆༻͢Δ • aria-describedby ଐੑΛ࢖༻ͯ͠ɺύεϫʔυϙϦγʔΛઆ໌ ͢Δ

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ύεϫʔυϚωʔδϟʔ🔑

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• ύεϫʔυΛ҆શʹೖྗ͢ΔͨΊͷܕ • 1 ͭ 1 ͭͷจࣈ͕ΞελϦεΫ ("*") ΍υοτ ("•") ͷΑ͏ͳه߸ʹΑͬ ͯӅ͞ΕΔ • ύεϫʔυϚωʔδϟʔ͕ݕ஌Մೳ

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autocomplete ଐੑ

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• αΠϯΠϯϑΥʔϜͳͲͷطଘͷ ύεϫʔυೖྗ • ύεϫʔυϚωʔδϟʔʹΑΔύ εϫʔυͷࣗಈೖྗ "current-password"

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"new-password" • αΠϯΞοϓϑΥʔϜ • ύεϫʔυมߋϑΥʔϜ • ύεϫʔυࣗಈੜ੒

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ύεϫʔυࣗಈೖྗͷ๷ࢭ • Basicೝূػೳ • ύεϫʔυมߋػೳ

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• ࠷ۙͷϒϥ΢βͰ͸ແࢹͯ͠ύε ϫʔυͷࣗಈೖྗΛ͢Δ(“current- password” ͱಉ͡ڍಈ) “off"

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༨ஊͰ͕͢… • autocomplete=“username” ΛϢʔβʔIDɾϝʔϧΞυϨεͷ ʹࢦఆ͢Δͱɺtype="text" ͷೖྗϑΟʔϧυ͕ෳ਺ଘ ࡏͨ͠৔߹ɺ༏ઌͯ͠ʮϢʔβʔ໊ʯͱͯࣗ͠ಈೖྗٴͼอଘͯ͘͠ ΕΔ • αΠϯΞοϓϑΥʔϜͷϢʔβʔ໊ʹར༻͢Δͱ👍

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ʮਪଌ͞Ε΍͍͢ʯύεϫʔυΛೖྗ ͤ͞ͳ͍ͨΊͷUIΛ஌Δ

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֬ೝͷͨΊͷ࠶ೖྗ͸ඞཁͰ͔͢ 🤔

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https://www.zuko.io/blog/should-you-use-con fi rm-password-on-your-forms- and-websites-case-study ύεϫʔυ֬ೝ͸ίϯόʔδϣϯ཰ΛԼ͛Δ 21

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ίϐϖ͢Δ͚ͩͰ֬ೝͯ͠ͳ͍ 😮💨

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ύεϫʔυදࣔ੾Γସ͑ػೳ͕˕ • ύεϫʔυ͕Ӆ͞Ε͍ͯΔ৔߹ɺϢʔβʔ͸ύεϫʔυͷೖྗϛεΛ ͠΍͘͢ͳΔ • ೖྗϛε͕૿͑ΔͱϢʔβʔ͸ϩάΠϯ͢ΔҙཉΛࣦ͍ɺϏδωεత ʹ΋ଛࣦͱͳΔՄೳੑ͕͋Δ • ೖྗϛε͕૿͑ΔͱϢʔβʔ͸ೖྗϛεΛ͠ͳ͍ͨΊʹʮਪଌ͠΍͢ ͍ʯύεϫʔυΛ࢖༻͢ΔՄೳੑ͕͋Δ

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༨ஊͰ͕͢… • ϞόΠϧΩʔϘʔυ͕αΠϯΠϯϘλϯΛ๦֐͠ͳ͍Α͏ʹ͢Δ͜ͱ ΋ݟམͱ͕͚ͪͩ͠Ͳେ੾👍

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ʮਪଌ͞Ε΍͍͢ʯύεϫʔυΛೖྗ ͤ͞ͳ͍ͨΊͷػೳΛ஌Δ

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ύεϫʔυڧ౓ϝʔλʔ📏

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zxcvbn • ΦϯϥΠϯετϨʔδαʔϏεΛఏڙ͍ͯ͠Δ Dropbox ͕։ൃɺ࣮ ࡍʹ࢖༻͞Ε͍ͯΔύεϫʔυڧ౓ਪఆͷͨΊͷϥΠϒϥϦ

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TypeScript ൛΋͋Γ·ͨ͠

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ಋೖ΋؆୯ʂ

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https://github.com/uidev1116/zxcvbn-ts-sample/ blob/master/src/main.ts 30 (JU)VCʹ͋͛ͯΈͨ✌

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·ͱΊ

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·ͱΊ ϒϥ΢βͷศརͳ૊ΈࠐΈػೳΛར༻͢Δͨ Ίɺద੾ͳHTMLλάΛར༻͠Α͏