Category Archives: Cyber Security

Black Hat 2014: Russian Spammers Compromise 420,000 Websites

Just in time for the Black Hat convention, the New York Times is reporting the discovery by Hold Security that a team of Russian Hackers have collected a total of 1.2 billion user names and passwords from 420,000 different websites, along with 542 million email addresses. Although this dwarfs the Target breach in sheer volume, […]

As Predicted, Ransomware is the Latest Mobile Threat

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 […]

Anti-Virus the Cloudmark way

Symantec is now admitting that traditional anti-virus solutions are losing the war against computer malware, according to a recent article in the Wall Street Journal. “Antivirus is dead,” says Brian Dye, Symantec’s senior vice president for information security. . . . hackers increasingly use novel bugs. Mr. Dye estimates antivirus now catches just 45% of […]

Malware spreading by fake Amazon notifications

We’ve recently seen a return of email spam campaign featuring fake Amazon.com notifications. This appeared in the Holiday shopping season last year coming from disposable domains, and is now back, apparently coming from compromised domains in the UK. Here’s an example: Of course, the attachment contains a malicious trojan that allows remote access to Windows […]

Twenty Years of Spam

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

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

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 […]

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