Tag Archives: featured

ZBot Trojan Not Detectable By Anti-Virus Programs

Security researchers have discovered that the Zbot Trojan is undetectable by most anti-virus programs because it is continually morphing. Zbot is one of the most widespread banking Trojans on the net and has been around since 2006. It uses a …

ZBot Trojan Not Detectable By Anti-Virus Programs
   

New Malicious Spam Exploits Craigslist

A new malicious spam attack is exploiting the popular site Craigslist. The messages arrive with the subject line “Re: Car For Sale on Craigslist” and with a message that look like a reply to an inquiry about a car for …

New Malicious Spam Exploits Craigslist
   

Managing whitelists and blocklists for Exchange Server environments

Most organisations that have deployed an email anti-spam solution will at some stage encounter a situation in which a false positive (legitimate email blocked as spam) or a false negative (spam email allowed to pass through) causes a problem for …

Managing whitelists and blocklists for Exchange Server environments
   

Using IP Block List Providers and the Connection Filter agent in Exchange 2007

Exchange Server 2007 includes integrated anti-spam features that run on Edge Transport servers and can optionally be enabled on Hub Transport servers.  In this blog post I will discuss the Connection Filter agent and how IP block list providers can be used to …

Using IP Block List Providers and the Connection Filter agent in Exchange 2007