We recently found similar Mirai-like scanning activity from Mexico with some being done via the exploitation of CVE-2018-10561 and CVE-2018-10562, two vulnerabilities that are specific to Gigabit Passive Optical Network (GPON)-based home routers.Read More
Crime follows the money, as the saying goes, and once again, cybercriminals have acted accordingly. The underground is flooded with so many offerings of cryptocurrency malware that it must be hard for the criminals themselves to determine which is best. This kind of malware, also known as cryptomalware, has a clear goal, which is to make money out of cryptocurrency transactions. This can be achieved through two different methods: stealing cryptocurrency and mining cryptocurrency on victims’ devices surreptitiously (without the victims noticing), a process also known as cryptojacking. In this post, we discuss how these two methods work, and see whether devices connected to the internet of things (IoT), which are relatively underpowered, are being targeted.Read More
Even before the term IoT was coined, we had the routers at the gateway, most of the time publicly exposed on the internet. In the context of the IoT, the router is perhaps the most important device for the whole infrastructure. All traffic goes through it and it allows for the provision of many services, such as Dynamic Host Configuration Protocol (DHCP), Domain Name System (DNS), content filtering, firewalls, and Voice over Internet Protocol (VoIP), to all connected devices, including computers, smartphones, and IP cameras. If an attacker is able to compromise the router, every device connected to it can be affected. And that’s what a hacking group in Brazil just did.Read More
If there is anything to be learned from the massive attacks that have been seen on connected devices, it is that the internet of things (IoT) is riddled with vulnerabilities. We have seen this time and again with how botnets are created from system weaknesses and have harnessed poor basic security to disrupt many devices and services.
In the past year, we embarked on a closer look at the security of IoT devices around the world. We chose devices that are available in different Amazon regions and are widely used in the Japan market, and tried to find out whether remote code execution (RCE) is possible. What we ended up finding out was more than that.Read More
Our network monitoring system recently detected an enormous amount of Mirai-like scanning activity from China. From 1:00 p.m. UTC on March 31 to 12:00 a.m. UTC on April 3, our team detected an influx of activity coming from 3,423 IP addresses of scanners. Brazil appeared to be the target location of the scanning of networked devices, including routers and IP cameras.Read More