What about the botnets?!

Botnets are a huge problem for a number of reasons. Not only are they used to send spam, they’re also used in criminal activities. One of the major challenges in dealing with botnets is finding and stopping the people who create and use them. Why? Because the internet is global and crime tends to be prosecuted within local jurisdictions.

White Collar Crime.
Catching someone running a botnet, or involved in crime online in general, requires cooperation from authorities in multiple jurisdictions. Police, lawyers, and other officials have had to create relationships to work together, all while respecting international law. It’s a involved and complicated process, and that’s before we talk about the challenges in actually figuring out who is running the botnet. Subject matter experts, like operating system manufacturers or anti-virus companies, are also part of the process in most cases. (Read about the Simda botnet takedown at Interpol)
Despite the challenges, botnets do get taken down and criminals do get arrested and brought to justice. Today the Department of Justice announced a guilty plea from a Russian citizen charged with infecting machines with malware.

Senakh and his co-conspirators used the Ebury botnet to generate and redirect internet traffic in furtherance of various click-fraud and spam e-mail schemes, which fraudulently generated millions of dollars in revenue. As part of the plea, Senakh admitted that he supported the criminal enterprise by creating accounts with domain registrars which helped build the Ebury botnet infrastructure and personally profited from traffic generated by the Ebury botnet.

Ebury is kinda interesting because it’s actually a Linux botnet, not a Windows one. It used a SSH exploit to get in, stole user credentials and then smuggled the credentials out in special TCP packets. CERT-BUND has some of the gritty technical details of what they discovered. And WeLiveSecurity also has a writeup on how the infection worked.
Botnets are a problem. Catching people is a long, drawn out challenge. But, it can be done.

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Whirlwind that is M3AAWG

It’s been a great conference, and it’s only about half done. As is common at these conferences, I write down lots of things we should do and need to publish. The difference is now that we are growing I may have the time to put the polish on them and get them published.
Today’s keynote discussed the economics of botnet mitigation. Michel van Eeten from Delft University of Technology presented information compiled from some different datasets about botnets.
Good news
Botnet infection rates are relatively stable. They’ve not spiraled out of control like some people were predicting.
Interesting news
More than 50% of bot infections are contained on 50 ISPs in the entire world.
Bad news
Centers set up specifically to fix botnet infections don’t really have a big impact on infection cure rate.
Good news
ISP actions and walled gardens do have an impact on infection cure rates.
The biggest take away from the session is that ISPs are critical in both protecting from infection and helping users cure infection once it happens.

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Security, safety and the cavalry

In some ways it’s been really hard to focus on email for the last few months. There are so many more important issues in the world. Terrorism, Brexit, the US elections compromised by a foreign government, nuclear threats from multiple countries, the repeal of ACA, mass deportations and ICE raids here in the US.  I find myself thinking about what to blog. Then I glance at the news and wonder if there’s any value in another blog post about deliverability.
Generally I’ve tried to keep politics and world events mostly off the blog. But sometimes events are such that I need to talk about them.
Last October I had the chance to speak at the Email Innovations Summit in London. Steve and I took the chance to spend some time doing tourist things in London – including a photo walk along the Thames.

As an American I’m always a little surprised by the security in London. I grew up a few miles outside of DC. I could talk about prohibited airspace and security measures before I was 10. London is so much more open than even the DC of my youth. The surprise there is that London has been a much bigger target and attacked more than any city in the US.
The last few times we were in London I noticed a bit more visible security. In 2013 it was armed security walking through Tube stations. Last year it was Underground trains that were one long car. They were a bit weird and visually disconcerting. The part that really made me think, though, was this was a way to stop people hiding explosives between cars and to facilitate evacuations if something happened.
Last night Steve and I were talking and I mentioned the attack in London didn’t seem like terrorism to me. And it didn’t, not really. He then pointed out that explosives and guns are difficult to come by in the UK and this was classic terrorism. Oh. Sometimes our cultural differences come out in the strangest places.
Thinking about bigger issues like this make it hard to focus on email. There’s a regularly shared joke in deliverability, “There’s no such thing as a deliverability emergency.” And there isn’t, not really. Yes, even if a whole range of IPs is listed on Spamhaus, it’s still not an emergency and there’s no fast response team to deal with it.
There are abuse issues that are higher stakes than getting to the inbox. Child abuse materials. Harassment. Privacy issues. Terror threats. Every online services company, particularly the social media companies, have to deal with these kinds of things. Many of them are dealing poorly. Others have employees who are doing their best, but lack the tools, support, and training to do it well. Many companies don’t understand why they need to police their customer base.
The reality is, though, that abuse on the net (as opposed to abuse of the net) is a huge issue that needs to be dealt with. These are not small issues. The Internet is global and there’s no internet police. Law enforcement in different jurisdictions have to work together with technology experts to address crime and harassment on the internet.
It may surprise you to hear that the people who create spam filters and try and protect your inbox are the same people who fight crime on the internet. Spam and email are a vital part of online crime, so it falls on the abuse team to work with and educate law enforcement about tracing the source of email. The people you never see in ops, and abuse and support are vital to protecting folks online.
During the closing talk at MAAWG the chair was discussing how we can protect our online spaces. He stated “There is no cavalry; no second wave. It’s us or no one.” That’s a huge thing. My friends and colleagues are the people who stand protecting users online. It feels like a huge burden, but it’s something we can do to make the world a better and safer place.
 
 

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Phones part of SMS botnet

Spammers have been moving into the phone market for a long time. Just recently security firms have discovered an Android  botnet. This botnet sends viruses over SMS, and when a link in the SMS is clicked, the phone is infected with the virus which then sends more SMS.
The technology for blocking and reporting SMS spam is comparable to email blocking technology 10 or 12 years ago. There just aren’t many tools for people to use to control this spam. M3AAWG is addressing mobile spam, but it still seems that the volumes are increasing without much recourse. Even the 7726 reporting number doesn’t seem to stop the spam (nor remove per-text charges).
At least in the beginning of the email spam problem, we didn’t have botnets. Now, at the beginning of the curve for SMS spam, we already have self replicating botnets. I’m afraid the good guys might be behind on this issue.
Then again I might just be cranky because SMS spammers woke us up at 4:30 am.
Infoworld article
TNW article
PCWorld article

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