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Mac Trojan?

I just read that there is a Mac virus going around. The article mentioned that it had injected itself (is that right?) into Graphic Converter 7 but might be part of other applications as well. It didn't name any. In one of the articles I found subsequently, there was mention that there are several anitvirus programs for Macs, including a free one from Sophos. No other one was mentioned, but I am wondering whether it might not be a good idea to put one on my Macs.

I have both a G4 desktop Mac running Tiger (OS 10.4) and a laptop with Leopard (OS 10.5). I've noticed some slowness (said to be a sign of infection by the virus), but I have no Graphic Converter. I also put much of the slowness down to my ISP being overwhelmed. I have changed my email address and shall soon part company, altogether, with my old ISP.

Any advice or further information, anyone? Thanks.


jennywren1420 has chosen the best answer to their question. View answer
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All Answers

Best Answer chosen by jennywren1420

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Rumors continue but we still need a virus

In reply to: Mac Trojan?

So far it remains true that we need a virus for the antivirus to protect against.

There is some malware and trojans but all the ones I know of are installed by the owners willingly. Not one installs on its own.

For example it is possible for folk to go to shady/blacklisted sites for free software like and INSTALL something bad.

Bad apps are not "virus". They are just bad.

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Much obliged, Bob

In reply to: Rumors continue but we still need a virus

As I said in my thank-you to your esteemed colleague, I am grateful to you for the clarity and informativeness of your reply. I am glad to say that I am not in the habit of clicking on any link to or within a suspicious app. I just couldn't tell, from what I had read (which was short on the essential details but rather alarming - or, I should say, alarmist) whether one might not unwittingly download the Trojan from a perfectly respectable place.

Thanks to you again,


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further to Bob's comment

In reply to: Mac Trojan?

The new thing is a Trojan, not a virus, which was inserted into a bootleg copy of Graphic Converter.

As you don't have that, there is not much to be concerned about.

I also don't believe that you are in the habit of downloading bootleg software so your chances of getting this, or any, malware are quite small.

10.5 has a Trojan catcher installed which Apple updates on a regular basis.


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Thanks to both of you!

In reply to: further to Bob's comment

Indeed, you are correct. I am not "in the habit of downloading bootleg software." I was concerned only because what was mentioned was made out to be a perfectly legitimate copy of Graphic Converter, not one conveyed by a man in a dirty raincoat. The article sent to me (and another that I read) also mentioned "other" software, and the implication was that that was legit, too. Too bad that such articles are so imprecise that they give the impression that anyone, however careful (and suspicious) could be caught in the web of a Trojan. (I mispoke, calling it a virus. I know well that it is a Trojan, and that they are different menaces.)

Once again, you (and Bob) provide both good sense and clarity for us who are far less well-informed and experienced. I am grateful. I would be pulling my forelock, if I had one to pull, so respectful am I.


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