Who is attacking Solid Oak, whose code was stolen for Green Dam?

There's not really any doubt that Green Dam is ripping off CyberSitter.... Last night, for the first time ever, Solid Oak suffered "server problems" so severe the machines had to be rebooted. While DiPasquale shied away from claiming a Chinese attack on the company, she said, "we suspect there's something being done. We've never had a problem until last night...."