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Intelligence Briefings from the War on Spam

Archive for the ‘Botnets’ Category

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 […]

Pinterest hit by the Com Spammers. Dr. Oz says he is not responsible.


Thursday, June 19, 2014 by Andrew Conway

Pinterest was hit this week by a vast diet pill spam attack from a well established cyber criminal gang we call the Com Spammers. As well as attacks on social networking sites such as Pinterest, they have also been active for years in email and SMS spam. Their landing pages often contain video clips from […]

Cloudmark’s 2014 Q1 Global Messaging Threat Report


Thursday, April 17, 2014 by Tom Landesman

Current events around the world became the focal point of many malicious and innocuous spam campaigns in the email and mobile messaging space this quarter. In Cloudmark’s 2014 Q1 Global Messaging Threat Report we’ve detailed several malicious campaigns that have reverted to a more old fashioned way of distributing malware, email spam, following the arrest […]

Twenty Years of Spam


Friday, April 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 […]

The Authentication Arms Race


Wednesday, December 18, 2013 by Andrew Conway

At Cloudmark, we have long recognized that we are in an arms race against the spammers. Spammers are continually trying to come up with new techniques for getting through our spam filters, and we are constantly monitoring their activities and staying one step ahead. It seems that the same thing is now happening in the […]

Update on Hacked Web Servers


Tuesday, August 20, 2013 by Andrew Conway

Just when the plague of hacked web servers seemed to be dying down a little, we hear of a new exploit for Joomla. While we haven’t seen this exploit being used by spammers yet, it will likely turn up in coming weeks. In the meantime, there are already two easy exploits in Joomla 1.5 that […]

An Undertaking of Great Advantage, and Other Stock Scams


Thursday, May 23, 2013 by Andrew Conway

In 1720, during the height of the “South-Sea Bubble” in the London stock market, one entrepreneur founded A company for carrying on an undertaking of great advantage, but nobody to know what it is. In six hours he sold £2,000 of stock (equivalent to millions of dollars in today’s money), then disappeared to the continent […]

Spammers hacking web servers to host porn, send spam


Monday, April 22, 2013 by Andrew Conway

For a long time we’ve been seeing spammers systematically compromising other people’s web sites to use URLs on them to redirect to the spammers landing page. This allows them to have a far greater range of call to action URLs in email spam. A recent attacker is not only using hacked web sites as redirectors, […]

2013’s First Quarter at a Glance


Wednesday, April 17, 2013 by Cloudmark

With the close of 2013’s first quarter, we’ve released our Q1 2013 Global eMessaging Threat Report detailing a myriad of SMS and IP spam statistics, trends and observations from the past three months. Paramount among them is a set of allegations leveled by the Federal Trade Commission (FTC). These filings contended that the defendants were […]

Botnets: Does Size Matter?


Monday, March 18, 2013 by Andrew Conway

Every so often the command and control servers for a botnet get taken down, and we are told breathlessly by the more extravagant security experts that this botnet was responsible for a quarter (or a half or a third) or all the world’s spam, and that we can expect to see a big reduction in […]


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