The Mac Flashback Trojan horse was still installed on more than half a million Apple computers late last week and is declining only slowly, Russian security company Dr. Web claims.
Contrary to reports by several security companies, the Flashback botnet is not shrinking, according to the Russian antivirus firm that first reported the massive infection.
A large spam campaign observed on Twitter during the last couple of days directed users to malicious websites that exploited vulnerabilities in browser plug-ins to infect their computers with rogue antivirus programs.
Mozilla this week began blocking outdated versions of a Java plug-in in Firefox for some Mac users after calling the threat posed by the Flashback malware "evident and imminent."
Fear your Mac has the Flashback malware installed, but you aren't running Java? You'll want to grab Apple's standalone removal tool.
The Department of Justice threw the book at Apple. Apple and several others threw their technical resources up against the Flashback virus. And Lex Friedman threw together this very edition of the Weekly Wrap, highlighting our most interesting and important stories from the past week.
Kaspersky Lab said late Thursday it had fixed the problems that caused it to suspend the Flashflake Removal Tool earlier in the day; meanwhile, security company Norton unveiled its own Flashback detection and removal tool, available for free download.
As promised, Apple has released a tool to remove Flashback from infected Macs.
Kaspersky Lab on Thursday suspended distribution of its tool to remove the Flashback malware attacking Mac computers, saying the tool itself was making unacceptable alterations to user computers. A replacement is expected soon.