The impact of the Flashback Trojan that hit more than half a million Macs earlier this year is on the decline, but it is still present on at least 140,000 computers, according to new stats from Symantec.
"The statistics from our sinkhole are showing declining numbers on a daily basis," Symantec said in a Tuesday blog post. "However, we had originally believed that we would have seen a greater decline in infections at this point in time, but this has proven not to be the case."
The number of computers currently infected has "tapered off," but is currently hovering around the 140,000 mark, Symantec said. Given the number of tools released to fix the issue, the firm expected "a dramatic decrease."
Last week, Symantec said it had detected about 270,000 computers infected with the Flashback Trojan, down from a high of 600,000 on April 6 and 380,000 on April 10. For more, see the chart below.
As PCMag's Security Watch noted recently, Mac users did not have to download or even interact with the malware to become infected. Websites exploited a Java flaw that let Flashback.K download itself onto Macs without warning. It then asked users to supply an administrative password, but even without that password, the malware was already installed.
In the wake of Flashback, another Mac Trojan was discovered. SabPub targeted Tibetan sympathizers with vulnerabilities in Java and Microsoft Word.
For more, see Flashback Central: How to Find, Protect Against, and Eliminate Scary Apple Malware. Symantec has its own Flashback removal tool, while F-Secure also released a free tool that automates the detection and removal of Flashback.