Help! My iMac has a trojan

Your machine does not have a virus, there are none for OS X. The first thing to try is create another user account (call it TEST) log into that account and re-test. If the problem goes away that points to your user account having some software issue and the problem not being global. Post back after trying the new user account.

Hey rkaufmann,

If I may correct you OS X can get viruses. It is very uncommon but it does happen. Even a linux OS is not immune to viruses. Thats why they sell anti viruses on the Mac app store.

-Aleks

Hey Daew,

Does this issue happen in Safari as well?

Some good Reading here > http://www.reedcorner.net/mmg/

In addition to Thomas Reed's site that AnaMusic directed you to, also read Klaus's User Tipon Viruses, Trojans, etc. Just because there are anti-virus programs sold does not mean there are viruses in the wild that affect or infect Mac OS X...there have been no verified viruses found for Mac OS X systems. Stay away from anti-virus software, many such cause damage to the Mac operating systems.

Ana, that link is out of date. The new correct one is:

www.thesafemac.com/mmg

Hi Klaus,

Thomas must have a redirect on it because it goes to the same 'The Safe Mac' page...

Cheers,

You may correct me but you would be wrong. There are no viruses for OSX, however there are a few Trojans. The best method of keeping your system malware free is keeping OS X up-to-date by running Software Update frequently. Also NEVER download some thing unless you request it and even then be wise and do not download from unfamiliar / untrusted sites.

That is such an incredible lie it's unreal. I suppose that security updates are pointless then right, becasue if there are no vulnerabilites you can't be hacked either. Both hackers and viruses use the same doors after all. I also suppose there wasnt a recent Java/Flash virus crisis that caused Apple to stop releasing updates to Flash through the Software Update and give the privilege back to Adobe who were faster at doing it anyway. Oh and these are all lies:

http://mac-antivirus-software-review.toptenreviews.com/history-of-macintosh-viru ses.html

http://nakedsecurity.sophos.com/2013/02/19/apples-own-macs-bitten-by-java-based- malware-attack/

http://www.huffingtonpost.com/2013/02/19/apple-java-update-mac-download-security _n_2720300.html

The problem with Mac viruses and the reason they are so dangerous is that every Mac fan and even Apple themselves will tell you till tehy are blue in the face that they don't exist just to save face. See here:

http://nakedsecurity.sophos.com/2008/12/03/mac-anti-virus-support-advice-disappe ars-off-apple-website/

Finally, I recommend trying this:

http://us.norton.com/mac-flashback/promo

If it comes up blank then you have Flashback trapped in your Chome Flash Player (Chrome doesnt use the built in Flash, it has it's own copy). Delete Chrome using Appcleaner (You MUST use a utility that deletes Chrome's libraries for this to work) then redownload (from a different browser) and install afterward and post back.

There are two subjects beginning with T that regularly come up here. Trojan and Troll. Guess what I'm thinking about.

Ok then please name just one virus for i

OS X. I never said there isn't malware in fact I said there are a few Trojans. Also I am dead correct stating what I said in my last post. This is my last post in this thread, it's a highly emotional issue to some and to be honest not worthy of spending time debating.

A trojan is a virus please correct me if I'm wrong with an article. OS X is also vulnerable to rootkits which are also viruses. They are also not immune to man in the middle attacks.

Here is a list:http://securitywatch.pcmag.com/none/295168-the-ten-most-dangerous-mac-viruses

You probably have a browser extension installed in Chrome that is causing the problem. There are a number of junk adware extensions out there that will do this sort of thing. They're not usually classified as malware, except in cases like Yontoo, where the software uses false pretenses to get itself installed.

In Chrome, choose Windows -> Extensions. This should open a page that lists all your extensions. The only one installed by default is the Google Docs extension... any others are suspect. What extensions do you see?