1. Background In early 2020, the US Department of Defense (DOD) released the Cybersecurity Maturity Model Classification (CMMC). On average, the USA loses USD 600 billion a year to adversaries in the cyberspace. Currently, the DOD has about 300,000 contractors, covering a variety of fields from hypersonic weapons to leather factories. Of all these contractors, […]
1. Background On cyberspace battlefields, adversaries often lurk in the darkness, but will jump at the throat of victims whenever spotting a chance. Today, extensive collection of huge amounts of data from various dimensions is nothing new. This can be very useful for security defenses, but at the same time brings unprecedented challenges to security […]
Background To facilitate debugging and analysis by developers, a lot of master computer configuration software often comes with a simulator that simulates a real programmable logic controller (PLC) or human-machine interface (HMI) device. Such simulators exchange data with master computer configuration software through TCP/IP and therefore some will listen on a designated port which is […]
Malicious Behaviors Targeting UPnP Vulnerabilities We captured four kinds of UPnP exploits 1, as shown in Table 4-7. Apparently, all the exploits targeted remote command execution vulnerabilities. Besides, we found that when a vulnerability is found on a specific port, attackers usually directly hit this port by skipping the UPnP discovery phase.
The outbreak of Incaseformat virus has affected many industries recently. It is critical because it has removed all non-system files and caused serious data loss. This virus appeared before, now it has come back and infected many hosts, especially in China. As of 14 Jan, 2:00 P.M.(GMT+8), NSFOCUS Labs and NSFOCUS Threat Intelligence have detected […]
The following sections analyze threats from the port mapping service based on UPnP port mapping tables collected from network-wide devices. Overview In the 2018 Annual IoT Security Report , we focused our attention on four types of malicious port mappings that had the most distinctive characteristics and the most extensive impact. Of the four major […]
In the 2018 Annual IoT Security Report, we analyzed threats against UPnP and you can refer to the report for basics of UPnP. In this report, we updated UPnP-related data and added new findings. Viewpoint 6: Approximately 2.28 million IoT devices around the world had the UPnP/SSDP service (port 1900) publicly accessible and therefore were […]
Attackers are targeting Citrix ADC (Application Delivery Controller) and utilize it to launch amplification attacks. However, no official patch has been released yet.
Introduction This chapter analyzes IoT threats from the perspective of protocols. According to the data from NSFOCUS’s threat hunting system, Telnet services (port 23) were targeted most frequently1. Therefore, we first analyze the attacks launched via Telnet. WS-Discovery reflection attacks are a new type of DDoS reflection attacks emerging in 2019 and will be described […]
Background Some time ago, some researchers detected a code injection vulnerability (CVE-2020-7475), which could cause Schneider’s Programmable Logic Controllers (PLCs) to operate like worms. If successfully exploited, this vulnerability could allow a PLC to act as a mini PC to carry out malicious network activities or as an intranet springboard or a network scanner to […]
