I was cleaning out my inbox over the weekend and found a spam that actually made me laugh.
Yes, it is spam advertising the “Official Greed[sic] Card Lottery.” It’s been 20 years since I’ve seen one of those!
Live, work and study in the USA
The American Dream Within Reach
50,000 people and their families will get a green card
Simple registration within 5 minutes
Yeah, we’ll get right on that!
Last month Brian Krebs reported that the Ashley Madison database was compromised. Ashley Madison is a dating site that targets married folks who are looking to have affairs. Needless to say, there is a lot of risk for users if their data is found on the released data. Today what is supposedly the Ashley Madison data was released.
The release of this data can have some significant impacts on the site members. Of course there’s the problem of credit card numbers being stolen, but that’s something most of us have to deal with on a regular basis. But there can also be significant relationship repercussions if/when a spouse discovers that their partner has registered on a site to have affairs.
When I first heard of the compromise I wondered if they had my data. You see, they have one of my spamtraps on their unsubscribe list. It just so happened that I visited an unsubscribe link, hosted by Ashley Madison (http://unsub.ashleymadison.com/?ref=2). This was during the time when I decided to unsubscribe from all the spam coming into one of my spamtraps. Is my email address going to be a part of this data dump? If my email address is there, what name do they have associated with it? This is the trap that gets mail addressed to multiple other people. Maybe it’s my email address but their name. Are they at risk for relationship problems or legal problems due to my attempt to unsubscribe?
Of course, Ashley Madison had no incentive to make sure their data was correct. In fact, they were sued for faking data to entice paying members. How much of the released data is false and will there be real harm due to that?
I expect in the next few days someone (or multiple someones) will put up a website where those of us who are curious can search the data. I just hope that people realize how much of the data is likely to be false. Even Arstechnica cautions readers from jumping to conclusions.
Over the last few years I’ve been hearing some people claim that botnets are the real spam problem and that if you can find a sender then they’re not a problem. Much of this is said in the context of hating on Canada for passing a law that requires senders actually get permission before sending email.
Botnets are a problem online. They’re a problem in a lot of ways. They can be used for denial of service attacks. They can be used to mine bitcoins. They can be used to host viruses. They can be used to send spam. They are a problem and a lot of people spend a lot of time and money trying to take down botnets.
For the typical end user, though, botnets are a minor contributor to spam in the inbox. Major ISPs, throughout the world, have worked together to address botnets and minimize the spam traffic from them. Those actions have been effective and many users never see botnet spam in their inbox, either because it’s blocked during send or blocked during receipt.
Most of the spam end users have to deal with is coming from people who nominally follow CAN SPAM. They have a real address at the bottom of the email. They’re using real ISPs or ESPs. They have unsubscribe links. Probably some of the mail is going to opt-in recipients. This mail is tricky, and expensive, to block, so a lot more of it gets through.
Much of this mail is sent by companies using real ISP connections. Brian Krebs, who I’ve mentioned before, wrote an article about one hosting company who previously supported a number of legal spammers. This hosting company was making $150,000 a month by letting customers send CAN SPAM legal mail. But the mail was unwanted enough that AOL blocked all of the network IP space – not just the spammer space, but all the IP space.
It’s an easy decision to block botnet sources. The amount of real mail coming from botnet space is zero. It’s a much bigger and more difficult decision to block legitimate sources of emails because there’s so much garbage coming from nearby IPs. What AOL did is a last resort when it’s clear the ISP isn’t going to stop spam coming out from their space.
Botnets are a problem. But quasi legitimate spammers are a bigger problem for filter admins and end users. Quasi legitimate spammers tend to hide behind ISPs and innocent customers. Some send off shared pools at ESPs and hide their traffic in the midst of wanted mail. They’re a bigger problem because the mail is harder to filter. They are bigger problems because a small portion of their recipients actually do want their mail. They’re bigger problems because some ISPs take their money and look the other way.
Botnets are easy to block, which makes them a solved problem. Spam from fixed IPs is harder to deal with and a bigger problem for endusers and filters.
I’ve talked about spamtraps in the past but they keep coming up in so many different discussions I have with people about delivery that I feel the need to write another blog post about them.
Spamtraps are …
… addresses that did not or could not sign up to receive mail from a sender.
… often mistakenly entered into signup forms (typos or people who don’t know their email addresses).
… often found on older lists.
… sometimes scraped off websites and sold by list brokers.
… sometimes caused by terrible bounce management.
… only a symptom …