Spam from Taiwan
TristanGrimaux writes "According to a recent study done by CipherTrust, two thirds of the world's spam is sent by Taiwan servers. The US follows with 24% and in a distant third is China with only 3% of the servers who actually sends the spam." The article cites easy access to broadband and lack of crackdown on offenders as the main contributing factors.
You don't do the business itself from the Caymans, just your under-the-radar finances.
How are sites slashdotted when nobody reads TFAs?
Except it's hardly ever the company itself that is doing the promotions... it's third-party people that target them and convince others, via spam, to invest in the company, which drives the prices up, which allows them to unload their own stock at a profit.
All while being 100% unrelated to the company.
$0.02 (CDN)
It's not a 'hunch'. I try to stop spam coming from a large devolved university network with a great number of varyingly maintained windows boxes and many different mail servers. A little over a year ago, spam zombie machines stopped flooding tens of thousands of messages an hour and started leaking out a handful every now and then. A few months later, the email-borne virus folks caught up.
It makes them a lot harder to spot.
For what it's worth, blacklists are effectively useless. Almost all spam now comes from poorly secured workstations and personal machines attached to ISPs and other organisations. All you're going to do with a blacklist is irritate organisations who have users with poorly configured machines. This includes practically everyone. The spammers are just going to move on to another part of their massive botnet, only legitimate email will be blocked.
Likewise, your blocking of entire class A-sized-blocks, particularly as with tight IP space, a lot of blocks are being broken up and moved round, is pretty pointless. Reminds me of a post some years ago by someone who claimed you could stop lots of spam for no loss by blocking mail from all TLDs other than .edu, .gov, .edu, and .net. Ho ho ho.
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