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Intelligence Briefings from the War on Spam

Archive for the ‘Cloudmark’ Category

The importance of being identifiable


Monday, July 28, 2014 by James Hoddinott

One of the technical pitfalls that many senders face surrounds the rDNS of an IP address. rDNS (also referred to as reverse DNS or a PTR record) is the friendly hostname that an IP address maps to and, from a human point of view, can be used to more easily identify a connection. Generally speaking, […]

Advanced Fee Scam by Phone


Friday, July 25, 2014 by Andrew Conway

I recently got a phone call telling me that I had been randomly awarded a $95,000 US government grant. Judging from the accent of the caller and the background noise I think it came from a boiler room operation in India somewhere, possibly the same one that keeps calling me to try to persuade me […]

Glide video messaging app continues to generate high levels of SMS spam complaints


Thursday, July 24, 2014 by Brock Henry

Earlier this year we were seeing a number of reports of SMS spam related to Glide.me, which is a mobile video messaging app. Tried video texting? http://i.glide.me/join Ready for Glide? http://i.glide.me/join Seen Glide? http://i.glide.me/join Tried video texting? http://i.glide.me/join Glide.me has had a history of spam, including where the admitted that they were spamming and would […]

Cloudmark’s 2014 Q2 Global Messaging Threat Report


Wednesday, July 16, 2014 by Tom Landesman

Spammers and attackers in both email and SMS were quick to redouble their efforts this quarter. In our 2014 Q2 Global Messaging Threat Report, we take a look at some of these various new trends popping up around the world. Comically, email phishers were quick to exploit the Heartbleed exploit without using the exploit. Deploying […]

Abusing Apple’s iMessage in the Big Apple


Tuesday, July 15, 2014 by Tom Landesman

Last year we took a look at specific SMS spam trends affecting New York City residents and found an abundance of scams claiming the recipient had won “free” stuff. This year, however, things have gotten a bit more interesting with a wave of Apple iMessage spam that, naturally, only targets iPhone users. During the past […]

Canadian Anti Spam Law (CASL)–a good step, but not the end of spam


Thursday, July 10, 2014 by Mark Stemm

On July 1, a new anti-spam law went into effect in Canada that significantly changes how commercial email messaging operates. The most significant feature of the Canadian Anti Spam Law (CASL) is that commercial senders must obtain express permission (i.e. opt-in) in order to continue sending commercial email. (There is a 3 year transition period […]

How to Report Text Message Spam: Samsung Galaxy S5 (TouchWiz)


Wednesday, July 02, 2014 by Tom Landesman

Plagued with annoying spam texts on your Samsung device? Report them to the GSMA spam reporting service! On most networks this can be done by forwarding them to 7726 (that’s S-P-A-M on your phone’s keypad.) Reporting these spam messages helps your mobile operator to take action against spammers and prevent further spam. Please note: while many […]

How to Report Text Message Spam: Android (KitKat, 4.4)


Wednesday, July 02, 2014 by Tom Landesman

Plagued with annoying spam texts on your Android device? Report them to the GSMA spam reporting service! On most networks this can be done by forwarding them to 7726 (that’s S-P-A-M on your phone’s keypad.) Reporting these spam messages helps your mobile operator to take action against spammers and prevent further spam. Please note: while many […]

As Predicted, Ransomware is the Latest Mobile Threat


Wednesday, June 18, 2014 by Andrew Conway

Another one of Cloudmark’s predictions for 2014 has proved to be correct. Last December our CTO Neil Cook wrote: Malware has also kept up a steady migration to the mobile space with ransomware set to be a logical next step in future. In its simplest form, ransomware could simply copy sensitive information from the phone […]

Email Blacklists and Cloudmark’s Sender Intelligence (CSI)


Tuesday, June 17, 2014 by Angela Knox

Return Path Infographic Return Path recently published an infographic guide to public email blacklists.  As the infographic explains “Public email blacklists are lists of IP Addresses and domains that have been reported and listed as “known” sources of spam.” These lists are used by both large email box providers and enterprises to make decisions about […]


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