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Update 什么是风险.md #9

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2 changes: 1 addition & 1 deletion 什么是风险.md
Original file line number Diff line number Diff line change
Expand Up @@ -47,7 +47,7 @@

在评估业务风险时,除了那些大概率会发生的事情,还有更多小概率发生的事,有时那些负面的小概率事件才是风险的来源。所以事前评估风险时应该冷静、开放的思考各个方面,包括小概率事件,甚至将业务逻辑之外的东西也考虑进去。

某家公司曾经通过QQ群发现有人在卖自己网站的用户账号,但是风控系统显示最近撞库并没有异常,通过风控团队和用户团队的配合,发现用户登录量少于风控记录到的登录量。为什么有些用户登录没有进行风控判断呢?排查后发现:当系统判断到用户在请求接口https://example.com/login时会调用风控,黑产通过请求 //login(两个/)绕开了这个判断逻辑,且依然可以访问登录接口(HTTP路径中/和//指向的地址是一样的)。
某家公司曾经通过QQ群发现有人在卖自己网站的用户账号,但是风控系统显示最近撞库并没有异常,通过风控团队和用户团队的配合,发现用户登录量多于风控记录到的登录量。为什么有些用户登录没有进行风控判断呢?排查后发现:当系统判断到用户在请求接口https://example.com/login时会调用风控,黑产通过请求 //login(两个/)绕开了这个判断逻辑,且依然可以访问登录接口(HTTP路径中/和//指向的地址是一样的)。

类似的案例表明风险有时来自于我们很难想到的地方,我们总显得比黑产“笨”一些。所以在风险评估时,应该尽可能从多方面想想,必要时应假设我们的策略失败了,并设计兜底方案。

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