Kaspersky Labs are reporting that they have discovered a Proof of Concept (PoC) virus that can infect both Linus ELF files and Windows PE files. Kaspersky states that clearly this is only a PoC.
We have all seen this before - it doesn't take long for a PoC to become reality. I'm wondering how long it takes for something like this to be come a reality, and in fact to be come "standard practice" for virus writers.
Just a reminder, just because you run OS X, Linux or other *nix variant, doesn't mean that you are immune form viruses. Practice Defense in depth, because the threats are out there for every OS.