Some details about "Vault 7" appear at wikileaks.org https://our.wikileaks.org/Vault_7
What is Vault 7? Wikileaks Releases Series of Cryptic Tweets
https://wearechange.org/vault-7-wikileaks-releases-series-cryptic-tweets/
“What is Vault 7? Where is Vault 7? When is Vault 7?” These are the questions that Wikileaks has tweeted, along with two pictures of what seems like an underground facility, and the two remaining questions, why and who, is Vault 7 seem to have the internet going in a frenzy for what Vault 7 could possibly mean.