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[Cyberpedia](https://www.paloaltonetworks.cn/cyberpedia?ts=markdown) 2. [Security Operations](https://www.paloaltonetworks.com/cyberpedia/security-operations?ts=markdown) 3. [为什么端点不应完全依赖扫描?](https://www.paloaltonetworks.cn/cyberpedia/why-endpoints-shouldnt-rely-entirely-on-scanning?ts=markdown) 目录 * [1. 依赖签名数据库](#reliance) * [2.只识别已知威胁](#threats) * [3.性能影响](#impact) * [4.静止文件不被视为威胁](#files) # 为什么端点不应完全依赖扫描? 目录 * [1. 依赖签名数据库](#reliance) * [2.只识别已知威胁](#threats) * [3.性能影响](#impact) * [4.静止文件不被视为威胁](#files) 1. 1. 依赖签名数据库 * [1. 1. 依赖签名数据库](#reliance) * [2. 2.只识别已知威胁](#threats) * [3. 3.性能影响](#impact) * [4. 4.静止文件不被视为威胁](#files) 几十年来,杀毒软件无疑一直是保护 端点的默认解决方案。大多数防病毒解决方案都会扫描端点,将文件与已知威胁的签名数据库进行交叉比对。虽然扫描技术足以识别已知威胁,但却无法跟上当今针对端点的高级威胁。以下是扫描不应成为保护端点安全的第一道防线的四个主要原因。 1. 依赖签名数据库 ---------- 在当前的威胁环境下,恶意软件会以惊人的速度变化,这意味着签名数据库需要持续更新最新签名,以避免过时。与扫描一样,这些更新也会降低系统性能。反病毒解决方案通常允许用户将更新安排在更方便的时间,但这可能会使数据库长期处于过期状态,在此期间,威胁很容易绕过并躲过扫描仪的检测。 [![获取《XDR 入门指南](https://www.paloaltonetworks.com/content/dam/pan/en_US/images/cyberpedia/XDR-for-dummies-guide-banner-55.png)](https://start.paloaltonetworks.com/xdr-for-dummies.html) ## 2.只识别已知威胁 扫描仪只能扫描样本的已知信息。任何未知的东西,如零日威胁或多态恶意软件,都不会被发现。攻击者通常会对现有威胁稍作修改,从而绕过扫描引擎的检测,产生多态恶意软件或变种。这些变种需要全新的签名才能被检测到,使扫描仪失去作用。创建新签名需要大量人力,而且无法跟上攻击者修改威胁的速度。 ## 3.性能影响 反病毒解决方案会定期扫描恶意文件或威胁,而不管当时的系统活动如何。这会消耗大量资源,占用磁盘空间,降低设备运行速度。为了尽量减少影响,用户通常会绕过或重新安排扫描,改变扫描频率,或完全停用杀毒软件。虽然任何这些操作都可以暂时避免性能下降,但它们会使系统容易受到恶意软件的攻击,而以前的扫描可能没有检测到这些恶意软件。此外,定期扫描会增加遗漏扫描间隙引入系统的恶意软件的风险。 ## 4.静止文件不被视为威胁 恶意文件在执行之前不会对系统构成实际威胁。反病毒解决方案会扫描潜在的恶意文件,大大影响了搜索对系统没有威胁的东西的性能。 最好的端点安全解决方案采用多种方法预防恶意软件,既能防范不断变化的威胁,又能解决防病毒扫描仪提出的问题,而所有这些都不依赖签名。它们可以与基于云的威胁分析服务集成,预防已知、未知和零时差威胁,在恶意软件活跃时就将重点放在恶意软件上,而不是为休眠活动消耗系统资源。 当识别到恶意软件时,基于云的服务会自动创建并向所有受保护的端点共享预防措施。这可确保端点能够防止已知或新发现的恶意软件,而无需定期更新。不过,安全小组仍可根据合规性或安全保证的需要,选择性地扫描恶意软件文件。 [XDR](https://www.paloaltonetworks.cn/cyberpedia/what-is-extended-detection-response-XDR?ts=markdown), 即扩展检测和响应,是一种创新的端点安全方法。XDR 可以收集几乎所有数据,如网络、云和端点数据,它认识到在孤立的孤岛中调查威胁是无效的。XDR 系统利用机器学习、分析和自动化将这些来源拼接在一起并从中获得洞察力,与孤立的安全工具相比,提高了安全可视性和工作效率。其结果是简化和加快了调查工作,缩短了发现、威胁追踪、调查和应对任何形式威胁所需的时间。 要了解有关 Cortex XDR 的更多信息,Cortex XDR 是业界首个 XDR 平台,可整合来自任何来源的数据以阻止现代攻击,请访问 [产品页面](https://www.paloaltonetworks.cn/cortex/cortex-xdr?ts=markdown)。 相关内容 [确保端点安全的 10 项要求 端点安全历来意味着使用无效的杀毒工具。阅读有效保护系统、用户和端点的十项要求。](https://www.paloaltonetworks.cn/cyberpedia/10-requirements-for-securing-endpoints?ts=markdown) [什么是 Cortex 扩展检测和响应 (XDR)? XDR,即扩展检测和响应,扩展了端点检测和响应,以提供整体保护。探索 Palo Alto Networks 的 XDR 解决方案。](https://www.paloaltonetworks.cn/cortex/detection-and-response?ts=markdown) [新一代杀毒软件的下一步白皮书 了解为什么有效的端点安全策略要超越企业防病毒解决方案,以及为什么投资 XDR 可以提供比 NGAV 或 EDR 更强的预防能力。](https://start.paloaltonetworks.cn/whats-next-for-next-gen-antivirus) [扩展检测和响应 (XDR) 基本指南 阅读《XDR 基本指南》,了解 XDR、其应用和用例,以及现在投资 XDR 如何保护您免受未来的威胁。](https://start.paloaltonetworks.cn/essential-guide-to-xdr) ![Share page on facebook](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/resources/facebook-circular-icon.svg) ![Share page on linkedin](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/resources/linkedin-circular-icon.svg) [![Share page by an email](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/resources/email-circular-icon.svg)](mailto:?subject=%E4%B8%BA%E4%BB%80%E4%B9%88%E7%AB%AF%E7%82%B9%E4%B8%8D%E5%BA%94%E5%AE%8C%E5%85%A8%E4%BE%9D%E8%B5%96%E6%89%AB%E6%8F%8F%EF%BC%9F&body=%E6%8F%AD%E5%BC%80%E7%AB%AF%E7%82%B9%E6%89%AB%E6%8F%8F%E7%9A%84%E6%9C%AC%E8%B4%A8%EF%BC%8C%E4%BA%86%E8%A7%A3%E5%AE%83%E5%A6%82%E4%BD%95%E8%AF%86%E5%88%AB%E6%BC%8F%E6%B4%9E%E3%80%81%E6%A3%80%E6%B5%8B%E6%81%B6%E6%84%8F%E8%BD%AF%E4%BB%B6%E5%B9%B6%E7%A1%AE%E4%BF%9D%E5%90%88%E8%A7%84%E6%80%A7%E3%80%82%20at%20https%3A//www.paloaltonetworks.com/cyberpedia/why-endpoints-shouldnt-rely-entirely-on-scanning) 返回页首 {#footer} ## 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