Very recently it was revealed that the famous malware Stuxnet was created as a joint operation by the U.S. and Israel. It's important to point out that this isn't really new, as nations have been waging so-called "cyber warfare" for years now.
Make no mistake, there are plenty of other pieces of malware in existence which have been designed for espionage or sabotage. One such piece of malware may be the Hutizu malware, which was found on the Caffeine Security honeypot earlier this year. And this definitely isn't the first time a nation has attacked another through "cyber warfare"...just ask the country Georgia.
While many will condemn "cyber warfare" actions, I personally applaud them. After all, if a "cyber weapon" such as Stuxnet can be used instead of real weapons, resulting in no loss of human life, then isn't that better than sending in planes and tanks?
What will be interesting is, now that the U.S. and Israel have openly entered the "cyber warfare" arena, how many nations will begin open cyber warfare against them?
There is a Chinese curse "May you live in interesting times." For those of us in the cyber security field, I have a feeling that curse is now upon us.