Preface: Using Big Data and data mining methods to predict attacks before they happen,the Cisco Umbrella Security Research team built such detection framework. Point of view: a. Vulnerability routers are vulnerable to Shell Metacharacters Attack Regarding to the observation result of Cisco Talos security team. There are group of router devices are vulnerable. They are … Continue reading My speculation on how Cisco (Talos) found the malware (VPNFilter malware).