Here is how I routed myself a block of IPv6 to my laptop, wherever I am in the world! Note that I deliberately route myself an entire /64, but only allow a /128 through tinc (to reduce the amount of junk I might drown in). It should be relatively trivial to swap addresses if necessary in future.
On the day I posted Suspected Data Security Breach at iContact.com I was contacted via Facebook by someone with an email address @icontact.com. I forwarded them the same information that I sent to their abuse team. I’ve not heard anything back since.
I suspect iContact.com has suffered a data security compromise.
Summary
I have received four nearly-identical spams to four different addresses known only to myself and four distinct websites. These four websites all use iContact.com for newsletter mailing. I have also received this spam to a spam-trap address, but importantly, to no other unique addresses that I use with other websites. The evidence points strongly to a data breach at iContact.com.