Good for ZenCash for reacting quickly.
That's why people can't just fire up a crypto and have its value grow faster than its hash power. Bitcoin had huge hash power before it was worth attacking. Popularity and nodes have to grow before it becomes valuable.
Back in 2015 Antonopolous used the analogy of a tricycle being protected by a huge vault, referring to Bitcoin's hash power compared to its value. Now, when it is worth a lot more and nation-states and banks want to take it out, they can't touch it. That's smart growth. Watch out BCash.
RE: Attacks 51%: ZenCash (ZEN) added to the list of victims