Payment with Dispute Resolution: A Protocol for Reimbursing Frauds Victims

Payment with Dispute Resolution: A Protocol for Reimbursing Frauds Victims
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支付与争议解决:赔偿欺诈受害者的协议

DOI:
10.1145/3579856.3595789
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发表时间:
2023
期刊:
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影响因子:
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通讯作者:
Abadi A
Abadi A
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作者:
Abadi A

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“授权推送支付”(APP)欺诈是指欺诈者欺骗受害人向其控制的银行账户付款的情况。通过APP诈骗窃取的资金总额正在迅速增长。尽管监管机构提供了改善受害者保护的指导方针,但这些指导方针模糊不清,执行缺乏透明度,受害者没有得到充分的保护。为了方便受害者的补偿,在这项工作中,我们提出了一个名为“支付与纠纷解决”(PwDR)的协议,并正式定义它,该协议允许诚实的受害者证明自己的清白,第三方纠纷解决者,同时保护协议参与者的隐私。它对标准的网上银行系统进行暗箱操作。我们实现了其最计算密集型的子程序,并分析其运行时。我们还评估了它的渐近成本。我们的评估表明,该协议是有效的。它只给客户和银行带来O(1)的开销。此外,争端解决者只需0.09毫秒就可以解决双方之间的争端。
An “Authorised Push Payment” (APP) fraud refers to a case where fraudsters deceive a victim to make payments to bank accounts controlled by them. The total amount of money stolen via APP frauds is swiftly growing. Although regulators have provided guidelines to improve victims’ protection, the guidelines are vague, the implementation is lacking in transparency, and the victims are not receiving sufficient protection. To facilitate victims’ reimbursement, in this work, we propose a protocol called “Payment with Dispute Resolution” (PwDR) and formally define it. The protocol lets an honest victim prove its innocence to a third-party dispute resolver while preserving the protocol participants’ privacy. It makes black-box use of a standard online banking system. We implement its most computationally-intensive subroutine and analyse its runtime. We also evaluate its asymptotic cost. Our evaluation indicates that the protocol is efficient. It imposes only O(1) overheads to the customer and bank. Moreover, it takes a dispute resolver only 0.09 milliseconds to settle a dispute between the two parties.
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