Over 600,000 Macs Now Infected With Flashback Trojan, Make Sure You Are Not

Over 600,000 Macs Now Infected With Flashback Trojan, Make Sure You Are Not

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Over 600,000 Macs are now affected with the BackDoor.Flashback.39 trojan, according to a report from Dr. Web.

Systems get infected with BackDoor.Flashback.39 after a user is redirected to a bogus site from a compromised resource or via a traffic distribution system. JavaScript code is used to load a Java-applet containing an exploit. Doctor Web's virus analysts discovered a large number of web-sites containing the code.

The trojan contacts a control service. Once contact has been made it can download and run the payload on the infected machine. It can run any executable received from a server.

Over 550 000 infected machines running Mac OS X have been a part of the botnet on April 4. These only comprise a segment of the botnet set up by means of the particular BackDoor.Flashback modification. Most infected computers reside in the United States (56.6%, or 303,449 infected hosts), Canada comes second (19.8%, or 106,379 infected computers), the third place is taken by the United Kingdom (12.8% or 68,577 cases of infection) and Australia with 6.1% (32,527 infected hosts) is the fourth.

The 550,000 number has since been updated to 600,000. "At this moment botnet Flashback over 600k, include 274 bots from Cupertino", tweeted Sorokin Ivan of Dr. Web.

Apple yesterday released a security fix for the Java vulnerability. F-Secure has instructions for detection and removal.

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Over 600,000 Macs Now Infected With Flashback Trojan, Make Sure You Are Not

Wimbledonpaul - April 7, 2012 at 2:20pm
Well I replaced OSX with Win7 on my 27" iMac and have never had any virus issues. Its not about OS vulnerability and more down to user vulnerability! (I wonder if anyone has researched any link between getting a virus on your machine and getting an STD!)
ratGT - April 7, 2012 at 11:49pm
My condolences... I feel SO sorry for you poor iMac...
brandon - April 7, 2012 at 3:47am
my compute is running windows 7 and got infected and I have three antivirus softwares on it it doesn't matter the number that guy is right windows is extremely vulnerable to any attack because most viruses smash through the antivirus soo how do you feel
Kose - April 6, 2012 at 5:49am
Windows is sloppy. And for apple to have been hit with this, is its destiny. Linux baby
WaterLily - April 6, 2012 at 1:26am
1) this is a pointless trojan 2) the number claimed is suspiciously high 3) tomorrow evidence shall prove Dr. Webs own calculation were done on a pc and he is who has the virus Either disable your JAVA or make sure you are updated from the Apple site. Also consider, removing Adobe Flash player, your Mac does not need it. And lastly, read careful to what you are asked when installing anything.
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