> Взломщики тоже не рассказывают по договорённости с майками?

Нет, у них договоренность с некоторыми анонимами -- они не рассказывают о взломе, а анонимы взамен не пользуются поисковиками:

https://translate.google.com/translate?sl=de&tl=ru&u=https:/...
> 23.06.1997  
> В пятницу сайт Microsoft был парализован хакером. Согласно Microsoft, обновление системы должно было привести к нарушениям.

https://www.theguardian.com/technology/2000/oct/27/security....
> Microsoft confirmed the electronic break-in late last night and said they were working with police and the FBI to
> investigate. They believe the episode was "industrial espionage".

www.zdnet.com/article/beta-hack-rattles-microsoft-5000298877
> 17.10.2002 - Microsoft is investigating a security breach on a server that hosts its Windows beta community, which allows more than 20,000 Windows users

[...]
https://blogs.technet.microsoft.com/msrc/2013/02/22/recent-c.../
> As reported by Facebook and Apple, Microsoft can confirm that we also recently experienced a similar security intrusion.

https://thehackernews.com/2014/01/microsoft-official-blog-an...
> Microsoft Official Blog and Twitter account hacked by Syrian Electronic Army
> Saturday, January 11, 2014 Wang Wei