Just as bosses and boards have finally sorted out their worst accounting and compliance troubles, and improved their feeble corporation governance, a new problem threatens to earn them -- especially in America -- the sort of nasty headlines that inevitably lead to heads rolling in the executive suite: data insecurity.

It never rains but it pours.

Several massive leakages of customer and employee data this year -- from organizations as diverse as Time Warner, the American defense contractor Science Applications International Corp and even the University of California, Berkeley -- have left managers hurriedly peering into their intricate IT systems and business processes in search of potential vulnerabilities.

"Data is becoming an asset which needs to be guarded as much as any other asset," says Haim Mendelson of Stanford University's business school.

Left, until now, to odd, low-level IT staff to put right, and seen as a concern only of data-rich industries such as banking, telecoms and air travel, information protection is now high on the boss's agenda in businesses of every variety.

"Setting the proper investment level for security, redundancy, and recovery is a management issue, not a technical one," he says.

Indeed, just as there is the concept of Generally Accepted Accounting Principles (GAAP), perhaps it is time for GASP, Generally Accepted Security Practices, suggested Eli Noam of New York's Columbia Business School.

Surely it should be obvious to the dimmest executive that trust, that most valuable of economic assets, is easily destroyed and hugely expensive to restore - and that few things are more likely to destroy trust than a company letting sensitive personal data get into the wrong hands.

"The ability to guard customer data is the key to market value, which the board is responsible for on behalf of shareholders."

The mystery is that this should come as a surprise to any boss.

The current state of affairs may have been encouraged -- though not justified -- by the lack of legal penalty (in America, but not Europe) for data leakage.

Until California recently passed a law, American firms did not have to tell anyone, even the victim, when data went astray.

Meanwhile, the theft of information about some 40 million credit-card accounts in America, disclosed on June 17th, overshadowed a hugely important decision a day earlier by America's Federal Trade Commission (FTC) that puts corporate America on notice that regulators will act if firms fail to provide adequate data security.

That may change fast: lots of proposed data-security legislation is now doing the rounds in Washington, D. C.