Of all intercepted packs that I am aware of I would say probably about 70% of them were from international express mail. I would avoid international express at all costs personally. The vendors I work with are not forced to use escrow and usually don't do refunds even if the pack never makes it. Prior to SR the risk of interception / non-delivery was largely on the customer, particularly for bulk orders. Not signing for a pack really probably isn't going to save you though, unless you also refuse delivery or never open the pack and return it to sender. But from what I have seen, if you sign for a pack during a CD you will be arrested about two seconds later. Also it is obviously to LE advantage for you to sign for a pack, otherwise they wouldn't (usually, but not always) try to get you to sign for it, even if signature was waived. In USA in particular almost every CD I have heard of (with a few exceptions) the agents delivering the pack got the customer to sign for it prior to arresting them, even in cases where the pack was sent without a signature being required (and the retarded customers still sign for it for some reason....).