Mary Schapiro, America's new top cop for the securities industry, said the current mass culling of journalists' jobs is a concern because it could reduce the number of leads that regulators get as they seek to crack down on nefarious behavior.

"It's an absolute worry for me because I think financial journalists have in many cases been the sources of some really important enforcement cases and really important discovery of practices and products that regulators should be profoundly concerned about," the chairman of the Securities and Exchange Commission told the Reuters Global Financial Regulation Summit in Washington on Tuesday.

"But for journalists having been dogged and determined and really pursuing some of these things, they might not be known to the regulators or they might not be known for a long time," she said.

But Schapiro, who was speaking a day after Conde Nast announced the closure of its glossy business magazine Portfolio only about two years after it launched, held out some hope for the business reporting trade. She said that some journalists should consider applying for jobs at the SEC.

"Investigative journalism actually would be a pretty interesting skill set for us to have. We've talked about financial analysis, we've talked about forensic accounting being skill sets that we really need -- understanding of complex trading, strategies and systems, but it's one of the things the SEC has to do. It has to really broaden its horizons and bring in people who think about things a little differently than it has historically."