When a block of IP addresses or a collection of domain names becomes associated with bad action -- spamming, jabbering, denial-of-servicing -- various ad-hoc Internet groups will add it to a blacklist of "rogue IPs" or "badware domains" that are blocked at a very low level in the network.
The problem is that there doesn't seem to be any way to readily diffuse an "all clear" signal to everyone who follows along with this block, which means that gradually, the net is acquiring "slums" -- blocks of useful space that can't be occupied by legitimate users because someone bad once lived there and now no one will accept their traffic.
The Washington Post's Security Fix visits this question -- it's a compelling problem when you think of it. Bad actors will continue to move from blocked IPs to fresh ones, and if we never release the blocked sections, eventually we'll have shut down a very large chunk of IP space indeed.
"The problem is once an address block gets so polluted and absorbed into all these blocklists, it's difficult to get off all of them because there is no central blocking authority," said Paul Ferguson, an advanced threat researcher at Trend Micro. "That space won't be toxic for all time to come, but certainly it is going to be tainted for whoever ends up with it..."
A year later: A look back at McColo
"What you'll find is some blacklists out there are derivatives of other lists, and it's hard to get those cleaned up," Bertier said, recalling a case last year in which a customer was given a swath of Internet addresses, only to find it was impossible to send e-mail from that space. "Typically in those cases, we'll work with the customers to get them new space and mark that allocation as something that really shouldn't be used for e-mail."
At Vice, Leigh Alexander (recently at Boing Boing) writes about the superstitious rituals we all practice when it comes to technology. We do it whether we are conscious of the ritual or not, and we do it even when we are informed the ritual is harmful to the machines. …blowing on cartridges may have actually […]
Human biases exposed by Implicit Association Tests can be replicated in machine learning using GloVe word embedding, according to a new study where GloVe was trained on “a corpus of text from the Web.”
Hey, it’s your ol’ pal Joel! Used to write a gadget blog that wasn’t about gadgets? Man, great to see you. No, no, have a seat. Can we get a couple of…yeah, no ice, thanks.So let’s get business out of the way before we eat: One of my clients is launching a Kickstarter today and […]
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