Another security problem

I had hoped to move away from security blogging this week and focus on some other issues. But today I see that both CAUCE and John Levine are reporting that there is malware spam coming from a Cheetahmail customer.
Looking at what they shared, it may be that Cheetahmail has not been compromised directly. Given mail is only coming from one /29, which belongs to one customer it is possible that only the single customer account has been compromised. If that is the case, then it’s most likely one of the Cheetahmail users at the customer got infected and their Cheetahmail credentials were stolen. The spammer then gained access to the customer’s Cheetahmail account.  It’s even possible that the spammer used the compromised customer account to launch the mail. If this is the case, the spammer looked exactly like the customer, so most normal controls wouldn’t have noticed this was a spammer.
This highlights the multiple vectors these criminals are using to gain access to ESPs and the mailing systems they use. They’re not just trying to compromise the ESPs, but they’re also attempting to compromise customers and access their accounts so that the spammer can steal the ESPs hard won and hard fought sending reputation.
Everyone sending mail should be taking a long, hard look at their security. Just because you’re not an ESP doesn’t mean you aren’t a target or that you can get away with lax security. You are also a target.

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Security, security, security

James Hoddinott posts, over on the Cloudmark blog, about another arrest associated with hackers infecting machines with a trojan that steals personal information.
There are so many security risks out there, and these messages have been hammered home recently. Home users are at risk from trojans, some spread by spam and some spread by advertising networks. Corporate users are at risk from all of those, but also from spear phishers who set out to infiltrate their business.
We all need to think hard about security. Not just keeping our Windows machines patched, but also thinking about what information we’re sharing and what passwords we’re using and all of the many things that create security.
We’re making some improvements to our security here. What are you doing at home and at work to keep your information, and your customer’s information, secure?

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Social networks and bulk email

There’s been a bit of a commotion on Twitter and over at J Caldwell’s blog about Al’s reaction to someone harvesting his address off LinkedIn and then adding that email address to his company’s marketing / newsletter database. Al objected to getting the mail, the person who did this shot back that it wasn’t spam, there was lots of arguing both over twitter and on the blog post.
This also recently happened when a well known email marketer took all 500+ of his Linked In contacts (including me) and added them to his corporate Christmas card list. His behaviour also created a bit of a stir, although it was a little less public.
That mailing was interesting, because a number of people who received the card thought this was the Best Use of Email, EVER! Some of them went so far as to opine “How could ANYONE not like this mail? What are they, Scrooge?” Well, actually, I found the mail irrelevant and a bit annoying. I have to admit I would have been a lot less annoyed if I knew this was a one time thing. However, in order to comply with CAN SPAM he included an opt-out. Which lead to some head scratching: have I been added to their full list? Am I going to get their newsletter from now on? Do I have to opt-out? What was he thinking?
Watching both of the above situations go down I have come up with a list of things you must consider when sending bulk mail to people who have connected with you on social networks.

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ESPs leaking email addresses

Two of my tagged email addresses started getting identical pharma spam over the weekend. It is annoying me because I am now getting spam in a mailbox that was previously spam free. The spam is overwhelming the real traffic and I am having to make some decisions about what to do with the email addresses and their associated accounts with the companies I gave them to.
One thing I did notice, though, is that both companies use iContact as their ESP. A cursory check of my other mailboxes shows that none of my other tagged addresses are mailed through iContact. I don’t think it’s very likely that these two individual, unrelated companies made deals with the same spammers to sell address lists at the same time. It’s much more likely that there was a compromise somewhere and address lists were stolen.
Edit: Checked my other account and, likewise, I’m getting the same spam to a 3rd address serviced by iContact. I’ve sent mail to all 3 companies involved and we’ll see how they react.
And, as I was thinking about this, iContact just laid off a bunch of staff about the same time they announced their partnership with Goodmail. Based on past history with companies in this situation, it seems possible this is a disgruntled former employee. I’ve also seen reports from other people noticing spam to addresses given to iContact customers.

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