Overview On January 13, 2021, NSFOCUS's emergency response team received feedback on the incaseformat virus from a host of customers in the government, healthcare, education, and telecom sectors. According to analysis, we found that this virus mainly infected hosts installed with financial management application systems. Also, we observed that all...
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Enterprise Blockchain Security 2020-1
Blockchains are distributed digital ledgers of cryptographically signed transactions that are grouped into blocks. Each block is cryptographically linked to the previous one (making it tamper evident) after validation and undergoing a consensus decision. As new blocks are added, older blocks become more difficult to modify (creating tamper resistance). New...
Watch Out! “Incaseformat” Came Back
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...
Annual IoT Security Report 2019-16
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...
Apache Flink Directory Traversal Vulnerability (CVE-2020-17518/17519) Threat Alert
Overview Recently, Apache Flink announced two directory traversal vulnerabilities, CVE-2020-17518 and CVE-2020-17519. Currently, Apache Flink has released a new version to fix the preceding vulnerability. Affected users are advised to upgrade as soon as possible. (mais…)
SolarWinds Supply Chain Attack Threat Alert
Overview On December 14, 2020, Beijing time, FireEye posted a blog on a SolarWinds supply chain attack. The blog shows that SolarWinds software was trojanized by attackers around March 2020 and suffered a severe supply chain attack. Currently, SolarWinds has released relevant updates. Users are advised to install the updates...
