VMware has confirmed that the source code for old versions of its ESX technology was leaked by hackers over the weekend – but played down the significance of the spill.

The virtualisation giant said on Sunday that the exposed portions of its hypervisor date back to 2004, and the leak follows the disclosure of VMware source code in April.

“It is possible that more related files will be posted in the future,” Iain Mulholland, VMware’s director of platform security, explained. “We take customer security seriously and have engaged our VMware Security Response Center to thoroughly investigate.”

Mulholland said customers who apply the latest product updates and patches, in addition to following system hardening guidelines, ought to be protected against attacks developed in the wake of the code leak.

“By applying the combination of the most current product updates and the relevant security patches, we believe our customer environments will be best protected,” he said.

via More VMware secret source splattered across internet • The Register.