Security of virtualized pentest labs


I'm planning to build a lab to practice pentesting, and i often see a fully virtualized lab is suggested (built only with VMs on person's main computer).

I'm surprised, because these kind of lab will host unsafe VMs from all over the internet ( , ..) .

There is from time to time new vulnerabilities to escape VMs, and it seems to me downloaded VMs could potentially contain malware exploiting one of these vulnerabilities ? (even if the risk is not high)

As a professional in information security, what do you think about this issue, and do you use unsafe VMs on your computer ?

(i hope my english is not too bad, sorry !)

Touch here for the full post on Network Security Noblemen tumblr

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