New lab machine: 23 Tellnoone

We are excited to announce the release of a brand-new lab machine 23 Tellnoone, which has been launched this week across all VHL Lab environments. The lab machine is classified as a beginner-level machine and contains a recent vulnerability that allows learners to practice real-world exploitation techniques in a controlled lab setting. If you run into any challenges while working through this lab machine, the lab dashboard is available to provide hints and assistance.

In this lab, learners will focus on reconnaissance, vulnerability identification, and exploitation fundamentals that reflect common weaknesses found in modern systems. The machine is designed to help build confidence while reinforcing a structured approach to offensive security testing. Tellnoone fits perfectly within the VHL learning path and is an excellent starting point for students who want to strengthen their core skills before moving on to more advanced lab environments. As with all VHL lab machines, the focus is on realism, clarity, and hands-on learning.

Completion of the Tellnoone lab machine also counts toward the VHL Certificate of Completion, which requires learners to successfully complete a total of 20 Beginner- and Advanced-level lab machines. More information about the VHL Certificate of Completion requirements can be found here.