A borderless nation would be extremely difficult to defend, to the point of rendering the idea unthinkable. The same can be said about borderless enterprises, except in that case the idea isn't unthinkable. In fact, borderless enterprises are becoming the rule, not the exception.

In a borderless enterprise, the traditional security perimeter no longer exists. Organizations are now faced with the task of securing highly virtualized IT environments that embrace cloud, mobile and social computing and server virtualization. At the same time, the emerging trend of software-defined networks (SDN) means that computing networks, like applications and infrastructure, are becoming ever more virtualized.

 An article by Edward A. Adams, President and CEO for Security Innovation

Maybe I missed the US coverage, but the Financial Times surprised me with news of USCybercom, America's Cyber Command.

I have written about Richard Clarke, the former anti-terrorism chief under Presidents Bill Clinton and George W. Bush, who wrote about the dangers to the US in his new book, Cyber War.

October is National Cybersecurity Awareness Month, according to the White House, and the Obama Administration is letting users know that they share in the responsibility of keeping the nation free from cyberattack.

This is the sixth year of the White House's campaign designed to highlight cybersecurity as a national priority that is vital to the economy and the security of the nation, according to a post on the White House Blog.

The U.S. and Europe will pool their cybersecurity efforts through a pan-European task force based in Rome, the Wall Street Journal reported this morning. The U.S. Secret Service is expected to announce the initiative later today.

The task force will focus on defending government sites against cyber attacks and monitoring computer networks for threats. According to the Journal, the unit will use software developed by Italian post office Poste Italiane to root out suspicious activity in online money transfers.