Q: Do i need an antivirus for my macbook pro 2012

You really do not need such software. But for a more overall view see:

Helpful Links Regarding Malware Protection

An excellent link to read is Tom Reed's Mac Malware Guide.

Also, visit The XLab FAQs and read Detecting and avoiding malware and spyware.

See these Apple articles:

          Mac OS X Snow Leopard and malware detection

          OS X Lion- Protect your Mac from malware

          OS X Mountain Lion- Protect your Mac from malware

          About file quarantine in OS X

If you require anti-virus protection I recommend using ClamXav.

You can install ClamXav or Sophos if you want. Any Mac OS X antivirus product which actually costs money should be avoided.

(86507)

NO!  If you are really concerned, download either ClamXav or Sophos and run them.  Both are free.  These are the only two AV applications that are generally accepted by the Apple community.

Ciao.

No.

There have been no virus attacks that affected OS X. There are perhaps a few dozen malware programs out there, though.

It's not worth getting anti-virus, though. Mac AV is generally bloatware and most have less than stellar detection stats. Some are harmful, such as ones that delete important system files.

Just don't visit unsafe websites like sites for pirating content, and you will likely never run into any malware.

NO,  such anti-virus software is not only not needed, it only causes problem

Like Kappy said, get ClamXav,.............dont download anything else, such "anti-virus" causes issues (some of them) on Mac, are a bad idea,.... especially Norton or MacKeeper etc.