In the last few days, I also could not access neither bitfinex nor bitstamp.
It worked only after I added the Google DNS servers (8.8.8.8 and 8.8.4.4) to the DNS settings.
Looks like a DNS attack on them, or even on Incapsula. Any other explanations?
Was working fine for me all the time.
now its work fine
but he wrote it 3 day before
i think he live a short time problem