绿盟答疑|为什么设置了由外到内全部禁止的策略，依然感染了勒索病毒？
企业网络，部署了各种安全设备，尤其是互联网网关的地方，防火墙设置了安全策略，从外面过来的一概不允许进入。蠕虫勒索究竟是如何进入到企业网络内部的呢？
Petya和NotPetya的关键技术性区别
有关Petya和NotPetya的文章这段时间已经铺天盖地了。大家都知道Petya和NotPetya是利用了永恒之蓝的漏洞，修改用户主引导记录（MBR），从而实现文件的加密。可是它们之间的具体区别是什么呢？本篇文章着重从技术角度分析了Petya和NotPetya的关键不同点。
Petya Variant Sample Technical Analysis
On the evening of June 27, 2017, multiple enterprises were attacked by ransomware, hence service interruption was caused. The first infections were identified in Ukraine. Since then, it has spread to many countries, including Brazil, Germany, Russia, and the US. This event had such an extensive and significant impact that technical support personnel of NSFOCUS paid close attention to it, and captured and analyzed the sample immediately.
