I mean, Microsoft and Security, those two words have never really been associated with each other in a serious conversation.
They're quite famous for being lax in security - mostly because they're a massive corporation, but also because they're high profile
That's why the comment said "outside Microsoft".
But keep in mind Google got hacked by the Chinese in 2009 or so.
Apologies - I did misread
“besides Microsoft”
Sure. But that's not the words they used.
Back when APTs were getting numbers, the joke was that Microsoft was "APT -1". The presence of windows/excel/outlook in your network was more of a threat than Anonymous, China and the DPRK put together.