Latest cybersecurity reporting from selected sources.

In early January 2026, KrebsOnSecurity revealed how a security researcher disclosed a vulnerability that was used to assemble Kimwolf, the world's largest and most disruptive botnet. Since then, the person in control of Kimwolf -- who goes by the handle "Dort" -- has coordinated a barrage of distributed denial-of-service (DDoS), doxing and email flooding attacks against the researcher and this author, and more recently caused a SWAT team to be sent to the researcher's home. This post examines what is knowable about Dort based on public information.

A new large-scale botnet called RondoDox is targeting 56 vulnerabilities in more than 30 distinct devices, including flaws first disclosed during Pwn2Own hacking competitions. [...]

Cybersecurity researchers have called attention to a new campaign that's actively exploiting a recently disclosed critical security flaw in Langflow to deliver the Flodrix botnet malware

The open-source XDR/SIEM provider’s servers are in other botnets’ crosshairs too Cybercriminals are trying to spread multiple Mirai variants by exploiting a critical Wazuh vulnerability, researchers say – the first reported active attacks since the code execution bug was disclosed.…

A Mirai botnet variant has been found exploiting a newly disclosed security flaw impacting Four-Faith industrial routers since early November 2024 with the goal of conducting distributed denial-of-service (DDoS) attacks

A recently disclosed security flaw in OSGeo GeoServer GeoTools has been exploited as part of multiple campaigns to deliver cryptocurrency miners, botnet malware such as Condi and JenX, and a known backdoor called SideWalk

The cryptojacking group known as Kinsing has demonstrated its ability to continuously evolve and adapt, proving to be a persistent threat by swiftly integrating newly disclosed vulnerabilities to exploit arsenal and expand its botnet

Two recently disclosed security flaws in Ivanti Connect Secure (ICS) devices are being exploited to deploy the infamous Mirai botnet

The recently disclosed critical security flaw impacting Apache ActiveMQ is being actively exploited by threat actors to distribute a new Go-based botnet called GoTitan as well as a .NET program known as PrCtrl Rat that's capable of remotely commandeering the infected hosts

A previously undocumented Go-based malware is targeting Redis servers with the goal of taking control of the infected systems and likely building a botnet network

A previously undocumented Go-based malware is targeting Redis servers with the goal of taking control of the infected systems and likely building a botnet network

A nascent Linux-based botnet named Enemybot has expanded its capabilities to include recently disclosed security vulnerabilities in its arsenal to target web servers, Android devices, and content management systems (CMS)

EnemyBot, a botnet based on code from multiple malware pieces, is expanding its reach by quickly adding exploits for recently disclosed critical vulnerabilities in web servers, content management systems, IoT, and Android devices. [...]

EnemyBot, a botnet based on code from multiple malware pieces, is expanding its reach by quickly adding exploits for recently disclosed critical vulnerabilities in web servers, content management systems, IoT, and Android devices. [...]

The recently disclosed critical Spring4Shell vulnerability is being actively exploited by threat actors to execute the Mirai botnet malware, particularly in the Singapore region since the start of April 2022

A variant of the Mirai botnet called Beastmode has been observed adopting newly disclosed vulnerabilities in TOTOLINK routers between February and March 2022 to infect unpatched devices and expand its reach potentially

Muhstik, a botnet infamous for propagating via web application exploits, has been observed targeting Redis servers using a recently disclosed vulnerability in the database system