The publisher, which admitted to suffering from similar small-scale hack attacks itself, said that the platform holder "couldn't have done anymore" to support developers during the outage.
"It's a practice that we certainly don't condone and we have nothing but sympathy for Sony," said SEGA West boss Mike Hayes. "It could happen to anyone. We support Sony 100% through the difficult time, which they've handled very well.
"Sony has communicated extremely well with its publishers, they've taken action and they've led us along each path they've chosen. I don't think they could have done any more.
"We've experienced those kind of attacks ourselves on a much lesser scale, particularly for Football Manager a few years ago. We constantly get them and know it severely damages our business. We won't go into the whys and wherefores, but we know that can happen to anyone in the legitimate sale of intellectual property. Sony get nothing other than our full backing."