What would be a good anti virus program that is reliable?
Many on here will advise against installing any anti-virus apps for Mac as there are, as yet, no viruses that affect Macs (although there is some malware). That said, the one that gets the most recommendations for being trouble-free is the free/donationware clamXav: www.clamxav.com
Whatevery you do, don't install MacKeeper - from reports on here and elsewhere it'll likely render your system useless.
Best thing you can do currently is just disable java in your borwsers or globally with Java Preferences (in Utilities) and also have the latest Java updates installed.
Disable Java in your Browser settings, not JavaScript.
http://support.apple.com/kb/HT5241?viewlocale=en_US
http://support.google.com/chrome/bin/answer.py?hl=en-GB&answer=142064
http://support.mozilla.org/en-US/kb/How%20to%20turn%20off%20Java%20applets
Flashback - Detect and remove the uprising Mac OS X Trojan...
http://www.mac-and-i.net/2012/04/flashback-detect-and-remove-uprising.html
In order to avoid detection, the installer will first look for the presence of some antivirus tools and other utilities that might be present on a power user's system, which according to F-Secure include the following:
/Library/Little Snitch
/Developer/Applications/Xcode.app/Contents/MacOS/Xcode
/Applications/VirusBarrier X6.app
/Applications/iAntiVirus/iAntiVirus.app
/Applications/avast!.app
/Applications/ClamXav.app
/Applications/HTTPScoop.app
/Applications/Packet Peeper.app
If these tools are found, then the malware deletes itself in an attempt to prevent detection by those who have the means and capability to do so. Many malware programs use this behavior, as was seen in others such as the Tsunami malware bot.
http://reviews.cnet.com/8301-13727_7-57410096-263/how-to-remove-the-flashback-ma lware-from-os-x/
http://x704.net/bbs/viewtopic.php?f=8&t=5844&p=70660#p70660
The most current flashback removal instructions are F-Secure's Trojan-Downloader:OSX/Flashback.K.
https://www.securelist.com/en/blog/208193454/Flashfake_Removal_Tool_and_online_c hecking_site
More bad news...
Removal for 10.5...
best anti virus for mac
