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almost every regex engine today descends from one of two approaches: Thompson’s NFA construction (1968) or backtracking (1994). Thompson-style engines (grep, RE2, Rust’s regex) give you linear-time guarantees but only support the “standard” fragment - | and *. backtracking engines (the rest, 95% chance the one you’re using) give you a mix of advanced features like backreferences, lookarounds.., but are unreliable, and can blow up to exponential time on adversarial inputs, which is a real security concern known as ReDoS. to be more precise, this exponential behavior is not the only problem with backtracking engines - they also handle the OR (|) operator much slower, but let’s try to start with the big picture.。WPS下载最新地址对此有专业解读
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英国工程咨询公司Arup香港团队在深伪视频会议中被冒充的高管指示转账，损失约2500万美元，涉及多次转账与多个账户。这个事件到底算欺诈险，还是算网络险。欺诈险视角强调员工被诱导转账，网络险视角强调数字身份被盗用、流程被操控、取证与恢复成本高企，以及可能产生的第三方索赔链条。路透社报道指出这种灰区造成的行业后果是当同一事故可以被解释为不同险种、不同触发条件、不同除外责任时，保险公司会更倾向于提高费率、收紧承保条件、甚至在续保时要求企业部署更强的身份验证与深伪检测工具。