[X4U] Trojan horse on the Mac?

[Thomas Noel]

The user of the Mac is probably in the address book of one of the  
offending PCs, and the malware is sending out mail that claims to be  
from the Mac user. There are no malware programs that can cause a Mac  
to send spam.

Tom



On Oct 19, 2006, at 7:57 PM, Nick Scalise wrote:

> On Oct 19, 2006, at 9:48 PM, Bob Aldridge wrote:
>
>> This question deals with a Trojan horse on the Mac and anti-virus  
>> software.
>>
>> I have a situation I’m at a loss to understand and could use some  
>> help from someone who may have encountered it before.
>>
>> I have installed some Mac’s at my church’s office. They have both  
>> Mac’s and PC’s for now. The local cable company that supplies the  
>> internet access stopped the outgoing mail because they said four  
>> of the machines (3 PC’s and 1 Mac) were infected with something  
>> that is sending out msg’s. They named the offending PC’s by e- 
>> mail, including the Mac. Only one of the PC’s is the big problem,  
>> apparently sending out a msg every 3 seconds, and the other two  
>> PC’s and one Mac were only sending a few msg’s.
>>
>> Sounds like a Trojan horse installed itself on the PC’s and is  
>> causing the big problem. Norton Anti-virus was up to date and did  
>> not catch it. I’ll figure out how to clean the PC but I’ve never  
>> heard of a Mac getting the same thing that infected a PC. And what  
>> do I run to clean the Mac? I didn’t buy any Mac anti-virus because  
>> I didn’t think Mac’s would get Trojan horse’s.
>>
>> My questions are: Is the cable company correct? Did the same  
>> Trojan horse infect the Mac & the PC’s? And if so, how do I clean  
>> the Mac of the Trojan horse.
>>
>> If you have a suggestion to how to clean the PC I’ll take it too.  
>> Norton Anti-virus did not detect it.
>
> My first question for the cable company is how they know which  
> computers are sending which messages.
>
> I generally avoid Norton, it seems to cause more problems than it  
> solves.
>
> There are 3-4 apps that I use to keep a PC safe from viruses,  
> malware, etc. All free, of course:
>
> AdAware - <http://www.lavasoftusa.com/software/adaware/?
> SpyBot - <http://www.safer-networking.org/en/spybotsd/index.html>
> AVG Anti-Virus - <http://www.grisoft.com/doc/products-avg-anti- 
> virus-free-edition/lng/us/tpl/tpl01>
> Zone Alarm - <http://www.zonelabs.com/store/content/company/ 
> products/znalm/freeDownload.jsp?dc=12bms&ctry=&lang=en>
>
> I don't have any prophylactic apps on my Mac. I seriously doubt  
> that your mac is truly sending out emails without your knowledge.
>
> --
> Nick Scalise
> nickscalise at cox.net
>
>
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