A group of hackers often referred to as Anonymous have set their
sights on Visa.com in a recent war against those sites that have denied
service to WikiLeaks.
Previous WikiLeaks-related targets of what has been dubbed Operation Payback (here’s a video
that breaks it down) include Swiss bank PostFinance (still down for the
count), which has closed the account of WikiLeaks founder Julian
Assange, PayPal (Anon took down the blog, but it’s now operational) and
Mastercard (now up and running — at least in some browsers).
Visa.com is now down for the count as well.