Researchers spot 700 percent increase in hypervisor ransomware attacks

Researchers at security software vendor Huntress say they’ve noticed a huge increase in ransomware attacks on hypervisors and urged users to ensure they’re as secure as can be and properly backed up. “Huntress case data revealed a stunning surge in hypervisor ransomware: its role in malicious encryption rocketed from just …

[SVD_NL]

Proprietary OS?

Threat actors realize that the host operating system is often proprietary or restricted

Just a friendly reminder Proxmox runs on plain ol' Debian. Not necessarily more secure out of the box, but at least you're in control!

[Jou (Mxyzptlk)]

Re: Proprietary OS?

Proxmox is simply not yet on the "worthy target list". That is about to change due to VMware/Broadcom, I suspect Q1 2026 it will step up on that ladder, similar as Hyper-V stepped up on that ladder Q3 2025 for the same reason. And then the usual applies you should always apply to hypervisors:

Separate them, inaccessible from outside (DUH!), and inaccessible from the normal work network where the normal users operate their mail surf the web and so on.

[harrys]

esxi 6

I wonder how many of these are still esxi 6 or less?

Twas when vmware started their "artificial" hardware requirements for v7 .... windows 10 to 11 style!

If they are out there.... thats some decent hardware :)

[Jou (Mxyzptlk)]

Re: esxi 6

You mean, someone uses the versions without native and efficient Win32 apps to control and configure? The old ones which DON'T need at least 16 GB RAM, preferable more, for it's HA appliance (two of them of course!) alone?

[Old Man Ted]

% parts per 100?

Please explain to me how there can be more than 100 parts per? Or has this octonarian miss understood what I was taught in the 1940's , That % was parts per 100. I know that somewhere over the Atlantic the ex French colony likes to use the term % as an excuse to display their lack of education and have a statue in the ex Dutch island.

[Bebu sa Ware]

"likes to use the term % as an excuse to display their lack of education"

I cannot say that I have detected any need for an excuse from that quarter when arrogantly exhibiting their profound ignorance — certainly not recently.

One wonder whether the ‰ symbol might trigger some kind of existential crisis in such small crania. ;)

[Jou (Mxyzptlk)]

Re: "likes to use the term % as an excuse to display their lack of education"

Imagine trying to explain that 0.1 and 10% are the same... And then 0.001 and 1 ‰??? Get your hearing protection ready, 'cause you'll be "Popular Science version of Dunning Kruger effect"-ed.

[Jou (Mxyzptlk)]

Re: % parts per 100?

Example: You had 5 attacks per hour. Now you have 40. How much % increase is this?

[TimMaher]

Re: “Now you have 40”

That’s because of the post.

[david1024]

Wonder

I'm sure this has nothing to do with the new and improved licenses