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Intelligence Briefings from the War on Spam

Twenty Years of Spam

Fri, Apr 11, 2014 by Andrew Conway

April 12th is the 20th anniversary of the first large scale commercial spam – the infamous “Green Card Lawyers” message that was posted to every newsgroup on Usenet News (right). Though there were attempts at spamming starting as early as 1978, they went out to hundreds of users rather than the hundreds of thousands that […]

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

Thu, Mar 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), […]

The good news is you don’t have cancer…

Mon, Mar 17, 2014 by Andrew Conway

…the bad news is that if you tried to see your diagnosis you just installed a trojan on your system which stole your credit card number and bank account login. A recent spam attack in the UK pretends to be a notification from the National Institute for Health and Care Excellence (NICE) saying that you […]

RSA Conference: Android in the Enterprise and the Future of Mobile Threats

Thu, Feb 27, 2014 by Andrew Conway

On Tuesday I had the privilege to lead a peer to peer discussion at the RSA convention entitled Android in the Enterprise and the Future of Mobile Threats. My role as moderator was to ask questions rather then provide answers. I ended up learning a lot in the session, so I would regard it as […]

Go Phish, for Bank Cards

Tue, Feb 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 […]

SMS Phishers Exploit Twilio and ow.ly to Steal Mobile Account Logins

Thu, Feb 13, 2014 by Mike Acar

Via the GSMA Spam Reporting Service, we’ve been receiving reports of an SMS phishing attack aimed at the customers of several large mobile providers in the US. And in an unusual twist, the phishers are trying to evade anti-abuse services by showing their malicious content only to mobile users. More than a quarter of a million mobile users. The […]

Guatemalan scammers taking lessons from Nigeria?

Thu, Feb 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 […]

Will Yahoo Mail data be used for Phishing?

Fri, Jan 31, 2014 by Angela Knox

Yahoo Mail announced a security attack yesterday where they observed hackers had been logging into peoples’ Yahoo email accounts using usernames and passwords that appeared to come from a third party who had access to this information. A Yahoo news article said that “A malicious computer program armed with Yahoo Mail passwords and usernames apparently […]

Cloudmark’s 2013 Annual Global Messaging Threat Report

Thu, Jan 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 Spam is Not a Natural Consequence of Growth

Mon, Jan 13, 2014 by Andrew Conway

In a recent blog post, Team Snapchat responded to users who were complaining of a recent increase in spam (emphasis in the original): While we expect to minimize spam, it is the consequence of a quickly growing service. To help prevent spam from entering your feed, you can adjust your settings to determine who can […]


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