Spamhaus reports Verizon routing hijacked IPs

Late last week Spamhaus published a blog post detailing their investigation into Verizon routing millions of IP addresses hijacked by spammers.
The Spamhaus blog post goes into some detail about what hijacked routing is.

For cybercriminals to make use of their stolen blocks however, a crucial step is to find an Internet Service Provider(ISP) or network with the ability to route these IP addresses to the rest of the Internet by using an autonomous system number(ASN). Also crucial is finding an ISP who won’t look too closely at the highly suspicious routing request. To get the routes to their stolen IP addresses announced, criminals will present forged authorization documents…

Actions like this are why an unknown IP is considered hostile until proven otherwise. I regularly tell clients than 99 times out of 100 when there’s mail from an IP never seen before it’s spam. I’ve often wondered if I’m understating the problem. That is way more than 99 IPs in 100 are sending spam. But I thought that would be an exaggeration and overly aggressive. Seeing the hijacked IPs just being routed through one US provider, though, tells me I am understating the problem.
Nevertheless, this is extremely bad behavior by Verizon and it’s disappointing that they seem unable or unwilling to take action about the spam and abuse coming from their network.

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Spammers, eh?

SpamBoxI’m back from a fun and successful trip to the APSIS Email Marketing Evolved conference. Of course, this means I’m digging out my mailboxes and going through mail I’ve ignored for the past week. It’s amazing how the spam builds up when I’m not tending to it every day.

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September 2015: The month in email

SeptemberCalendarSeptember’s big adventure was our trip to Stockholm, where I gave the keynote address at the APSIS Conference (Look for a wrapup post with beautiful photos of palaces soon!) and had lots of interesting conversations about all things email-related.
Now that we’re back, we’re working with clients as they prepare for the holiday mailing season. We wrote a post on why it’s so important to make sure you’ve optimized your deliverability strategy and resolved any open issues well in advance of your sends. Steve covered some similar territory in his post “Outrunning the Bear”. If you haven’t started planning, start now. If you need some help, give us a call.
In that post, we talked a bit about the increased volumes of both marketing and transactional email during the holiday season, and I did a followup post this week about how transactional email is defined — or not — both by practice and by law. I also wrote a bit about reputation and once again emphasized that sending mail people actually want is really the only strategy that can work in the long term.
While we were gone, I got a lot of spam, including a depressing amount of what I call “legitimate spam” — not just porn and pharmaceuticals, but legitimate companies with appalling address acquisition and sending strategies. I also wrote about spamtraps again (bookmark this post if you need more information on spamtraps, as I linked to several previous discussions we’ve had on the subject) and how we need to start viewing them as symptoms of larger list problems, not something that, once eradicated, means a list is healthy. I also posted about Jan Schaumann’s survey on internet operations, and how this relates to the larger discussions we’ve had on the power of systems administrators to manage mail (see Meri’s excellent post here<).
I wrote about privacy and tracking online and how it’s shifted over the past two decades. With marketers collecting and tracking more and more data, including personally-identifiable information (PII), the risks of organizational doxxing are significant. Moreso than ever before, marketers need to be aware of security issues. On the topic of security and cybercrime, Steve posted about two factor authentication, and how companies might consider providing incentives for customers to adopt this model.

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August 2015: The month in review

It’s been a busy blogging month and we’ve all written about challenges and best practices. I found myself advocating that any company that does email marketing really must have a well-defined delivery strategy. Email is such vital part of how most companies communicate with customers and potential customers, and the delivery landscape continues to increase in complexity (see my post on pattern matching for a more abstract look at how people tend to think about filters and getting to the inbox). Successful email marketers are proactive about delivery strategy and are able to respond quickly as issues arise. Stay tuned for more from us on this topic.
I also wrote up some deliverability advice for the DNC, which I think is valuable for anyone looking at how to maintain engagement with a list over time.  It’s also worth thinking about in the context of how to re-engage a list that may have been stagnant for a while. A comment on that post inspired a followup discussion about how delivery decisions get made, and whether an individual person in the process could impact something like an election through these delivery decisions. What do you think?
As we frequently point out, “best practices” in delivery evolve over time, and all too often, companies set up mail programs and never go back to check that things continue to run properly. We talked about how to check your tech, as well as what to monitor during and after a send. Josh wrote about utilizing all of your data across multiple mail streams, which is critical for understanding how you’re engaging with your recipients, as well as the importance of continuous testing to see what content and presentation strategies work best for those recipients.
Speaking of recipients, we wrote a bit about online identity and the implications of unverified email addresses in regards to the Ashley Madison hack and cautioned about false data and what might result from the release of that data.
Steve’s in-depth technical series for August was a two-part look at TXT records — what they are and how to use them — and he explains that the ways people use these, properly and improperly, can have a real impact on your sends.
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