Posts Tagged: American Registry for Internet Numbers


15
May 19

A Tough Week for IP Address Scammers

In the early days of the Internet, there was a period when Internet Protocol version 4 (IPv4) addresses (e.g. 4.4.4.4) were given out like cotton candy to anyone who asked. But these days companies are queuing up to obtain new IP space from the various regional registries that periodically dole out the prized digits. With the value of a single IP hovering between $15-$25, those registries are now fighting a wave of shady brokers who specialize in securing new IP address blocks under false pretenses and then reselling to spammers. Here’s the story of one broker who fought back in the courts, and lost spectacularly.

On May 14, South Carolina U.S. Attorney Sherri Lydon filed criminal wire fraud charges against Amir Golestan, alleging he and his Charleston, S.C. based company Micfo LLC orchestrated an elaborate network of phony companies and aliases to secure more than 735,000 IPs from the American Registry for Internet Numbers (ARIN), a nonprofit which oversees IP addresses assigned to entities in the U.S., Canada, and parts of the Caribbean.

Interestingly, Micfo itself set this process in motion late last year when it sued ARIN. In December 2018, Micfo’s attorneys asked a federal court in Virginia to issue a temporary restraining order against ARIN, which had already told the company about its discovery of the phony front companies and was threatening to revoke some 735,000 IP addresses. That is, unless Micfo agreed to provide more information about its operations and customers.

At the time, many of the IP address blocks assigned to Micfo had been freshly resold to spammers. Micfo ultimately declined to provide ARIN the requested information, and as a result the court denied Micfo’s request (the transcript of that hearing is instructive and amusing).

But by virtue of the contract Micfo signed with ARIN, any further dispute had to be settled via arbitration. On May 13, that arbitration panel ordered Micfo to pay $350,000 for ARIN’s legal fees and to cough up any of those 735,000 IPs the company hadn’t already sold.

According to the criminal indictment in South Carolina, in 2017 and 2018 Golestan sold IP addresses using a third party broker:

“Golestan sold 65,536 IPv4 addresses for $13 each, for a total of $851,896,” the indictment alleges. “Golestan also organized a second transaction for another 65,536 IP addresses, for another approximately $1 million. During this same time period, Golestan had a contract to sell 327,680 IP addresses at $19 per address, for a total of $6.22 million” [this last transaction would be blocked.] Continue reading →


19
Apr 17

Tracing Spam: Diet Pills from Beltway Bandits

Reading junk spam messages isn’t exactly my idea of a good time, but sometimes fun can be had when you take a moment to check who really sent the email. Here’s the simple story of how a recent spam email advertising celebrity “diet pills” was traced back to a Washington, D.C.-area defense contractor that builds tactical communications systems for the U.S. military and intelligence communities.

atballYour average spam email can contain a great deal of information about the systems used to blast junk email. If you’re lucky, it may even offer insight into the organization that owns the networked resources (computers, mobile devices) which have been hacked for use in sending or relaying junk messages.

Earlier this month, anti-spam activist and expert Ron Guilmette found himself poring over the “headers” for a spam message that set off a curious alert. “Headers” are the usually unseen addressing and routing details that accompany each message. They’re generally unseen because they’re hidden unless you know how and where to look for them.

Let’s take the headers from this particular email — from April 12, 2017 — as an example. To the uninitiated, email headers may seem like an overwhelming dump of information. But there really are only a few things we’re interested in here (Guilmette’s actual email address has been modified to “ronsdomain.example.com” in the otherwise unaltered spam message headers below): Continue reading →


7
Apr 10

ISP Privacy Proposal Draws Fire

A proposal to let Internet service providers conceal the contact information for their business customers is drawing fire from a number of experts in the security community, who say the change will make it harder to mitigate the threat from spam and malicious software.

The American Registry for Internet Numbers (ARIN) — one of five regional registries worldwide that is responsible for allocating blocks of Internet addresses – later this month will consider a proposal to ease rules that require ISPs to publish address and phone number information for their business customers.

The idea has support from several ISPs that claim the current policy forces ISPs to effectively publish their customer lists.

“I operate in a very competitive business, and there are instances where I can show that my competitors have gone out and harvested customers’ contact information and used that to try to take those customers away,” said Aaron Wendel, chief technical officer at Kansas City based Wholesale Internet Inc., and the author of the proposal. “I have yet to find another private industry that is not government-related that requires you to make your customer lists publicly available on the Internet.”

Critics of the plan say it will only lead to litigation and confusion, while aiding spammers and other shady actors who obtain blocks of addresses by posing as legitimate businesses.

Continue reading →