Nintendo has denied reports from earlier this week that it had been hacked by Crimson Collective telling Japanese news publication Sankei Shimbun that there’s “no confirmation of any leakage of personal information, nor any breach of development or business information.” The news that Nintendo had suffered a data breach spread like wildfire on social media and it thankfully turns out that the reports were in error.
Nintendo denies data leak after online reports

The Pokemon Company and GameFreak aren’t Nintendo
Nintendo owns shares, so you don’t think they would know? LOL
This is a different leak. It never transpired:
Nintendo é dona de 33% apenas
Nintendo owns The Pokémon Company and it is one of its subsidiaries, so even if the parent company wasn’t affected, seeing one of its subsidiaries hacked is never good…
Its not a subsidiary. Nor is it owned.
Its a joint venture between Nintendo and others.
Nintendo owns half of the Pokemon company.
Not exactly. Nintendo doesn’t own half of The Pokémon Company; it only owns about a third, alongside Game Freak and Creatures Inc.
Also, The Pokémon Company itself isn’t the owner of Pokémon; it’s just the brand management company for the three owners.
Trademark registration doesn’t mean ownership either (like when Nintendo held Banjo-Kazooie trademarks but didn’t control the IP).
And just to clarify in the context of these leaks: Nintendo has no shares or ownership in Game Freak, the studio that actually made the games that leaked.