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Intelligence Briefings from the War on Spam

Archive for the ‘SMS Fraud’ Category

Defcon 2014: Blackphone Beefs Up Android Security


Sunday, August 10, 2014 by Andrew Conway

The vendor area at Black Hat goes by the name of The Business Hall, and that sums it up. It is full of security companies, large and small, pitching their products in typical trade show fashion. The vendor area at Defcon is not like that. It is a jumble of vendors selling hacker equipment, lock […]

Black Hat 2014: Cellular modem vulnerabilities threaten mobile users


Wednesday, August 06, 2014 by Aaron Lehmann

Mobile broadband modems are small USB sticks that connect a computer to the internet through a cellular network. The great convenience of being able to stay connected outside of areas with Wi-Fi has led to over 100 million of these devices being sold. However, security flaws in these ubiquitous modems may become a boon for cybercriminals. […]

Apple SMS phishing and the iCloud


Tuesday, July 22, 2014 by Andrew Conway

Just last night, I upgraded my Mac Air to the latest release of OSX. The upgrade did not go as smoothly as most. When rebooting, my computer hung for a couple of hours with the screen saying Restarting . When I finally got bored with this and held down the power key for a hard […]

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 […]

Cruises and Stolen Tax Returns in the Windy City


Monday, June 16, 2014 by Tom Landesman

We’ve seen an interesting shift in Chicago’s SMS spam over the past few months. At the start of 2014, up until mid-April, bank phishing attempts had been the dominate flavor of SMS sent unsolicited to phones in the city. However, Floridian Cruise spam has taken a big jump in numbers this spring. So far this […]

Spammers Tap Regional Operators to Send SMS Spam from U.S. To Malaysia and Mexico


Thursday, March 27, 2014 by Jason

Cloudmark has observed that in some cases different categories of SMS spammers target different types of US Regional Mobile Operators, also known as tier 2 or tier 3 operators. Mobile operators are divided into different tiers depending on whether they fully own the network that they use to deliver voice and data services (tier 1), […]

Go Phish, for Bank Cards


Tuesday, February 25, 2014 by Tom Landesman

With the New Year, it appears SMS scammers in the U.S. have taken a renewed interest in bank and account phishing mobile users. In January alone, more than half of all SMS spam reported via the GSMA Spam Reporting Service within the US were phishing attempts. From targeting prepaid debit cards for Child Support Recipients […]

Guatemalan scammers taking lessons from Nigeria?


Thursday, February 06, 2014 by Emmet Cassidy

When it comes to exports and Guatemala, we generally think coffee. However, while poring over our Mobile messaging data, we discovered another Guatemalan export: Nigerian-style scam campaigns. Over the past two to three years, mobile phone users in the USA have been receiving SMS messages, originating in Guatemala, informing them that they have won a […]

Cloudmark’s 2013 Annual Global Messaging Threat Report


Thursday, January 30, 2014 by Tom Landesman

As the Chinese New Year rings in the year of the Horse, we’re also excited to announce the release of our 2013 Annual Global Messaging Threat Report. Looking back at the year, we discuss the evolving realm of highly targeted, regional SMS spam campaigns, spammers’ preference for financial themes, Apple iMessage abuse, dramatic increases in […]

Snapchat Exploit Leads to 4.6 Million Exposed Records


Friday, January 03, 2014 by Tom Landesman

Snapchat may have had less than a happy New Year thanks to the authors of SnapchatDB.info. The site, released on December 31, features approximately 4.6 million Snapchat users’ username, phone number, and area-code-derived geographical region. These records were collected using an exploit published by Gibson Security who has been exploring the undocumented Snapchat API for […]


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