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    Archive for the ‘Spam’ Category




    The malware UPATRE was gained much prominence following the demise of the Blackhole Exploit kit. It was since known as one of the top malware seen attached to spammed messages and continues to be so all throughout 2014 with particularly high numbers seen in the fourth quarter of the year. We have released our annual roundup where we talked about the different trends related to spam, and this entry offers a closer look. Looking back at 2014: Notable Spam Trends Based on our ...

    Posted in Spam |



    2015 has just begun, but we're already seeing old problems crop up again - particularly the abuse of a lot of legitimate web sites. Since the start of the year, we've been seeing a significant increase in the number of spammed messages with links that lead to various Russian dating sites. Figure 1. Sample of dating site spam While messages of these types are fairly common, this recent wave is unusual in several ways. First, the level of dating site spam is higher than ...

    Posted in Spam | 1 TrackBack »



    Email authentication and validation is one method that is used to help bring down the levels of spam and phishing by identifying senders so that malicious emails can be identified and discarded. Two frameworks are in common usage today; these are SPF and DKIM. SPF (Sender Policy Framework): Defined in RFC 7208, SPF provides a mechanism to allow receivers to check that incoming mail from a domain is being sent from a host authorized by that domain's owner. The list of ...

    Posted in Spam | Comments Off



    Earlier this week, we noticed that there was a spike in the volume of spammed messages that pretend to come from the messaging service Viber.  This app, which also has  a desktop version, allows users for free calls and messages. The email informs the recipient that they have one voice message for their account. Figure 1. Sample spammed message Different Routines for PC and Mobile The infection routine is pretty straightforward for computers: clicking the embedded link leads to the download of backdoor malware, detected ...




    We recently observed a new ransomware variant, TorrentLocker, that was targeted at nearly 4,000 organizations and enterprises, many of which are located in Italy. TorrentLocker is similar to an earlier ransomware family (CryptoLocker), and also encrypts various files and forces users to pay a sum of money. TorrentLocker uses the TOR anonymity network to hide its network traffic, which may have been the origin of its name. The said threat used spam email written in Italian with several templates as part of ...

    Posted in Malware, Spam | Comments Off


     

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