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    # Learn from the big mistakes of cashless payment service in Japan - AIDO & Manaka {%hackmd @HITCON/rkYm1whdY %} > 從這開始 從日本無現金支付服務的大錯誤中吸取教訓 日本無現金支付服務行業經歷了四次大騙取款。我將解釋其中三個。基於日本領先企業 7-11、Docomo(日本最大的手機)和日本郵政銀行(日本第四大銀行和前國有企業)所犯的重大錯誤,我將探討導致這些錯誤的更深層次的原因對這些事件。在所有三個案例中,都犯了兩個重大錯誤;如果他們在第一次得到妥善處理,造成的傷害就會減少。 台灣和日本的支付系統非常相似,所以應該有很大的經驗教訓。 Live Q & A 連結: https://app.sli.do/event/w1aq8loc 2020 /10 的資安事件: 它的情況就是駭客利用手機綁金流值付PayPay驗證時,綁定信用卡卻沒有驗證個人生日做為驗證,所以駭客透過弱密碼及密碼字典去做暴力破解。 由於驗證的資料中,並沒有綁定個人的E-Mail 所以駭客在驗證時,就直接綁定駭客的生日。 然後就可以取得授權,在超商 7-11 買香煙、電子菸,因為這些東西換現金較容易。 駭客集團在金流支付的整個授權非常了解。 整個組織是有備而來,所以在事件發生時,當天已分配完成所有人的分工。 --- DOCOMO :造成 125 事件,然後 2800萬日幣損害。 問題: (1) 開帳號居然不用身份驗證 (2) 為了擴展客戶而沒有注重資安 (3) 完全沒有驗證,犯人允許用隨便註冊的E-Mail認證 (4) 金流扣款無法追蹤 (5) 金流只有卡號+生日就能扣款 (6) 目前銀行跟金流目前合約中斷 (7) 即使存款為 0 也能跟銀行借款 (8) 客戶投訴,銀行不受理 (9) 雙方找不到原因,所以互相推卸責任 金流支付只有 帳號/密碼 所以駭客取得帳密之後,就可以加上駭客的免洗 E-Mail做扣款及金流交易。 銀行扣繳時,並沒有其他驗證,也沒有相關的通知。 --- mija 卡 ###### tags: `HITCON2021`,`HITCON`

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