From Barack Obama, the Wall Street Journal:  [T]he cyber threat to our nation is one of the most serious economic and national security challenges we face.

So far, no one has managed to seriously damage or disrupt our critical infrastructure networks. But foreign governments, criminal syndicates and lone individuals are probing our financial, energy and public safety systems every day. Last year, a water plant in Texas disconnected its control system from the Internet after a hacker posted pictures of the facility’s internal controls. More recently, hackers penetrated the networks of companies that operate our natural-gas pipelines. Computer systems in critical sectors of our economy—including the nuclear and chemical industries—are being increasingly targeted. . . .

That’s why my administration has made cybersecurity a priority, including proposing legislation to strengthen our nation’s digital defenses. It’s why Congress must pass comprehensive cybersecurity legislation. . . .

Ultimately, this is about security gaps that have to be filled. To their credit, many of these companies have boosted their cyber defenses. But many others have not, with some lacking even the most basic protection: a good password. That puts public safety and our national security at risk.

The American people deserve to know that companies running our critical infrastructure meet basic, commonsense cybersecurity standards, just as they already meet other security requirements. Nuclear power plants must have fences and defenses to thwart a terrorist attack. Water treatment plants must test their water regularly for contaminants. Airplanes must have secure cockpit doors. We all understand the need for these kinds of physical security measures. It would be the height of irresponsibility to leave a digital backdoor wide open to our cyber adversaries. . . .

Today we can see the cyber threat to the networks upon which so much of our modern American lives depend. We have the opportunity—and the responsibility—to take action now and stay a step ahead of our adversaries. For the sake of our national and economic security, I urge the Senate to pass the Cybersecurity Act of 2012 and Congress to send me comprehensive legislation so I can sign it into law.

It’s time to strengthen our defenses against this growing danger.

Mr. Obama is president of the United States.   (photo: Getty)

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