Japan's Sony Corp., victim of one of the largest data breaches in history, voiced support on Wednesday for cybersecurity legislation being considered by the US Congress.

Tim Schaaff, president of Sony Network Entertainment International, also told a Senate panel that the level of activity on the PlayStation Network had returned to more than 90 percent of what it was before a series of cyberattacks that began in mid-April.

"Almost every day it seems a new story emerges about businesses, government entities, public institutions and individuals becoming victims of this cyber crime wave," Schaaff said in written testimony to a hearing of the Senate Commerce, Science and Transportation Committee on privacy and data security.