These are portions of JSON responses from Yandex while browsing the latest Shadow Brokers leak. They include information about the uploads that isn't necessarily visible or easy to access from the web interface.
- The leak was released shortly after a Patch Tuesday and at the start of a holiday weekend.
- Uploader's account name: yurishitova
- The account doesn't show up anywhere else; it was likely created specifically for this purpose.
- My guess is that the name can be broken up into two words: