Today at 11:15am PST time during the same time that Coinbase enabled trading for Bitcoin cash, the subreddit for bitcoin cash, /r/BTC was hacked.
Unknown at this time is who is behind the hack. As of 10 minutes after the hack, there has been no change on the subreddit.
edit: The subreddit has been fixed – 11:21am PST
The only thing displayed on the page, is a link to /r/bitcoin, which was the first subreddit for bitcoin.
There seems to be a story here – /r/BTC was created and controlled by Roger Ver, who made and created Bitcoin Cash. Today, Bitcoin Cash has been controlling the markets due to its release for trading on GDAX. Was this an inside job? Or an attack at Roger Ver?