Blog

IP Reputation Report-11172019

November 21, 2019 | Mina Hao

Top 10 countries in attack counts: The above diagram shows the top 10 regions with the most malicious IP addresses from the NSFOCUS IP Reputation databases at November 17, 2019. Top 10 countries in attack percentage: The Laos is in first place. The Uzbekistan is in the second place. The country China (CN) is not […]

Cybersecurity Insights-5

November 20, 2019 | Mina Hao

Insights into Vulnerabilities 4.1 Overall Trend The National Vulnerability Database had recorded 15,800 CVE vulnerabilities for 2018, including 4096 high-risk ones. Compared with 2017, the total number of vulnerabilities found in 2018 increased 8.2%, while the number of high-risk ones dropped by 4.8%. Although the number of vulnerabilities increased steadily, they did so slowly, possibly […]

Advisory: Open-Source Compression Library Libarchive Code Execution Vulnerability (CVE-2019-18408)

November 19, 2019 | Mina Hao

Overview Recently, a code execution vulnerability (CVE-2019-18408) was disclosed in the security update of Debian, Ubuntu, Gentoo and other distributions.

How NSFOCUS ADS KO’s DDoS Attacks

November 18, 2019 | Mina Hao

What Is DDoS? Look at the following example: Assume that you run a shop that is doing well. At this time, your neighbor, Mr. Wang (or whatever his name is), whose business is slack, looks at you as an eyesore. Therefore, he hires a group of hooligans. Then you find that your shop is crowded […]

Cloud DPS Showing That Gaming Customers Are in Need of Tbps-Level Cleaning Resources to Counter Volumetric Attacks

November 16, 2019 | Mina Hao

In July, 2019, Cloud DPS, a cloud cleaning product from NSFOCUS, managed to withstand a wave of DDoS attacks over 100 Gbps that lasted one week. Targeting a board/card game vendor, those attacks exhibited perfect regularity, with the traffic averaging 100 Gbps and peaking at 431.6 Gbps.

SQL Injection Revealing the Truth Behind Information Disclosure

November 15, 2019 | Mina Hao

I. Principle At present, there has been a great deal of news coverage about information disclosure. A large amount of information is constantly disclosed and sold through various websites, resulting in endless cases of telecom fraud. We have already known that SQL injection is the culprit responsible for all the cases. An SQL injection attack […]

IP Reputation Report-11102019

November 14, 2019 | Mina Hao

Top 10 countries in attack counts: The above diagram shows the top 10 regions with the most malicious IP addresses from the NSFOCUS IP Reputation databases at November 10, 2019.

Cybersecurity Insights-4

November 13, 2019 | Mina Hao

3.3 Recidivists “Recidivists” here refer to attack sources found to repeatedly engage in malicious activities. In the 2018 H1 Cybersecurity Insights, we pointed out that 25% of recidivists were responsible for 40% of attack events24. Considering the quantity and level of threat, these attackers should not be underestimated. By the end of 2018, the number […]

Apache Solr velocity Remote Code Execution Vulnerability Handling Guide

November 12, 2019 | Mina Hao

Vulnerability Description On October 30, @_S00pY disclosed the exploitation of Apache Solr Remote Code Execution Vulnerability, which allows attackers to implement remote code execution via velocity templates. After testing, the vulnerability can be successfully triggered, and no official security patch has been released.

What Should I Do When I Am Directed to a Macao Gambling Website Instead of the Intended Website

November 11, 2019 | Mina Hao

Incident Review In February 2019, our monitoring found that some domestic users, when accessing certain websites through their home routers, were hijacked to pornographic and gambling websites. According to our sample inspection, more than 4 million IP addresses were hijacked to about 190 domain names concerning pornography and gambling during this incident. These victim users […]