People are your weakest link

Social engineering is a long standing way to compromise security. Chunkhost reports today that they discovered accounts being compromised through social engineering of Sendgrid support. While the compromise did not work it was a close call. The only thing that saved the targeted customers was their implementation of 2 factor authentication.
We know many of our customers individually and personally, and are still careful about changing contact addresses and passwords. With larger customer bases, it’s vital that every person in the change follow security processes.

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This month in email: February 2014

After a few months of hiatus, I’m resurrecting the this month in email feature. So what did we talk about in February?
Industry News
There was quite a bit of industry news. M3AAWG was in mid-February and there were actually a few sessions we were allowed to blog about. Gmail announced their new pilot FBL program. Ladar Levinson gave the keynote talking about the Lavabit shutdown and his new darkmail program. Brian Krebs won the Mary Litynski award for his work in investigating online security issues. The 4 major mailbox providers talked about their spam filters and spam filtering philosophy.
February was also the month where different companies evaluated their success or failure of products. LinkedIn announced the shutdown of their Intro product and Facebook announced the shutdown of their Facebook.com email service.
Security Issues
Cloudmark published their 2013 report on the Global Spam Threat and we discovered that the massive Target breach started through phishing. I also noticed a serious uptick in the amount of phishing mails in my own mailbox. There is  new round of denial of service attacks using NTP amplification. We provided information on how to secure your NTP servers.
Address Collection
The Hip Hop group De La Soul released their entire catalog for free, online, using a confirmed opt-in email process. On the flip side, the M3AAWG hotel required anyone logging into the wifi network to give an email address and agree to receive marketing mail. We also discovered that some political mailing lists were being used in ways the politicians and recipients didn’t expect.
Email Practices
I talked about how to go about contacting an ISP that doesn’t have a postmaster page or a published method of contact. Much of that information is actually relevant for contacting ISPs that do have a contact method, too. Finally, I talked about how ISPs measure engagement and how that’s significantly different from how ESPs think it is.
 

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First spam to Epsilon leaked address

This morning I received the first two spams to the address of mine that was compromised during the Epsilon compromise back in April. Actually, I received two of them. One was the “standard” Adobe phish email. The other was similar but referenced Limewire instead of Adobe.

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Get a helmet

There’s been a lot of interesting reaction to Steve’s security post yesterday. A lot of people seem upset that we have pointed out one of the ways that ESPs may be getting compromised. Complaints range from the message being overly simplistic, through to complaints that we just don’t understand how much of an issue security is, through to complaints that we’re not pointing out that some ESPs actually are secure. Some people have even provided counter examples of how simple it is to compromise any company, so why are we picking on ESPs.
Security is a problem any company faces. Some industries are bigger targets than others, and ESPs have really jumped up the target list. ESPs are getting lists stolen. ESPs are getting reputations stolen.
There’s one ESP I know for a fact that has lost multiple customer lists 3 times. Three companies I get email from are hosted there. When all three of those tagged addresses started getting spam, the only logical assumption was that the ESP was compromised. Again. Those are companies I want to hear from, though, and I changed addresses on their sites after every breach. What’s distressing, though, is the total lack of response from either the customer or the ESP to my notices about the breaches.  To be fair, the problem seems to have stopped more recently.
Silence and refusal to address an issue is a big problem. An address I gave a company on the Only Influencers list was stolen (I’m not going to say leaked because I actually trust them to not have violated their privacy policy) sometime back in early 2011. I didn’t notice right away because my spam filters were catching the mail, but eventually the spammers managed to get one into my inbox. When I saw it, I started checking and realized that address had been compromised a long time ago. I notified the company, with as much history of the address as I could. I ended my message with:

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