As we can see from coinmarketcap.com a sea of red coins in the market most likely because of the current event in South Korea. We don't have to worry about this, this news is just to create a FUD to its investor. What we can do now is just stay calm and do not panic sell. Everything will be back to normal.
Calm and patient can avoid panic, that's the key to dealing with such situations, but sometimes calm and patient will be something meaningless if we do not make a purchase.