As I mentioned in I Won’t Be Provoked Into Self-Censorship, the government regularly erases parts of history by removing or editing articles on the internet. WikiLeaks has ensured that any sensitive information from the hacked Sony documents will not disappear.
From WikiLeaks Press Release:
WikiLeaks has a commitment to preserving the historical archive. This means ensuring archives that have made it to the public domain remain there regardless of legal or political pressure, and in a way that is accessible and useable to the public. WikiLeaks’ publication of The Sony Archives will ensure this database remains accessible to the public for years to come.