Currently Being ModeratedSep 6, 2013 7:24 AM (in response to tjahyonotedi)
OS X has got its own security systems, so you don't need any security software. Just keep Mac OS X updated. See > http://www.thesafemac.com/mmg
If you want an antivirus, you can use Sophos or ClamXav, but you only need them if you have files you will transfer to Windows PCs. You might infect other PCs
Currently Being ModeratedSep 6, 2013 7:27 AM (in response to tjahyonotedi)
Need is a matter of perspective. OS X includes a number of security measures to combat malware (Gatekeeper, XProtect, and a built-in Firewall); however, no system is completely foolproof. One of the best ways to protect your system is to develop computing "street smarts" and know how to identify and avoid suspicious locations and files on the Web; however, this takes time to develop. If you are uncertain of what to look for, and would feel more comfortable having a tool help you scan for and identify malware, then I'd recommend installing a lightweight and free malware scanner like Sophos Home Edition (http://www.sophos.com/en-us/products/free-tools/sophos-antivirus-for-mac-home-ed ition.aspx).
Of course any additional software you add to your system may adversely affect it, so often anti-malware tools are seen as unnecessary because of the potential for being intrusive without much benefit in return, given the relatively low level of malware that targets OS X. However, despite claims here and elsewhere of problems with their software installations, most anti-malware tools work just fine for those who have installed them, and reside benignly in the background, scanning and doing their thing.
Also keep in mind that anti-malware tools are just helpers. They will help detect known threats if you encounter them but are not guarantees of full protection. Therefore, do not assume that with one installed you will be able to freely open any file you find and be safe. Still apply caution to your actions online and elsewhere, and be wary of offers, unknown files, popup windows, and random update warnings (especially through email or Web pages).
Currently Being ModeratedSep 6, 2013 7:45 AM (in response to tjahyonotedi)
You may find this User Tip on Viruses, Trojan Detection and Removal, as well as general Internet Security and Privacy, useful: The User Tip seeks to offer guidance on the main security threats and how to avoid them.
In reality of course, there is no such thing as total internet privacy: US and British intelligence agencies have successfully cracked much of the online encryption relied upon by hundreds of millions of people to protect the privacy of their personal data, online transactions and emails: http://www.theguardian.com/world/2013/sep/05/nsa-gchq-encryption-codes-security
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