Seoul is right in the headline.
And in the article (right at the top, repeatedly) it's not SK press, it's SK intelligence agents saying this. The headline wouldn't say "Seoul" and then have it be a private entity; "Seoul" is a metonym for the SK government. People only conflate individual institutions with the government when it's China and some Chinese business does something stupid but not illegal.
That would be irrelevant because it's not SK's "free press," it's their government agents issuing this warning.