Q: mac viruses as of 6/12/14

Sounds like a hijack - see the information on this link and the steps to fix

http://blog.malwarebytes.org/fraud-scam/2013/07/fbi-ransomware-now-targeting-app les-mac-os-x-users/

That's not a virus but a Safari pop-up or a spam email.

I suggest a visit to The Safe Mac » Adware Removal Guide.

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 Thomas Reed recommends using Dr.Web Light from the App Store. It's free, and since it's from the App Store, it won't destabilize the system. If you prefer one of the better known commercial products, then Thomas recommends using Sophos.(Thank you to Thomas Reed for these recommendations.) If you already use Sophos, then be aware of this if you are using Mavericks: OS X Mavericks- Sophos Anti-Virus on-access scanner versions 8.0 - 9.1 may cause unexpected restarts

From user Joe Bailey comes this equally useful advice:

The facts are:

1. There is no anti-malware software that can detect 100% of the malware out there.

2. There is no anti-malware that can detect anything targeting the Mac because there

     is no Mac malware in the wild, and therefore, no "signatures" to detect.

3. The very best way to prevent the most attacks is for you as the user to be aware that

     the most successful malware attacks rely on very sophisticated social engineering

     techniques preying on human avarice, ****, and fear.

4. Internet popups saying the FBI, NSA, Microsoft, your ISP has detected malware on

    your computer is intended to entice you to install their malware thinking it is a

    protection against malware.

5. Some of the anti-malware products on the market are worse than the malware

    from which they purport to protect you.

6. Be cautious where you go on the internet.

7. Only download anything from sites you know are safe.

8. Avoid links you receive in email, always be suspicious even if you get something

    you think is from a friend, but you were not expecting.

9. If there is any question in your mind, then assume it is malware.

This is one of many variants of a web page that refuses to be dismissed, effectively hijacking your browser and preventing you from doing anything with it until you quit the program. It's nothing more than a lame phishing scam that attempts to deceive you into providing personal information such as credit card numbers. If you did not do that, there is no reason for concern. There are countess variants of the same scam with similarly pathetic attempts at impersonating law enforcement organizations from the Bundespolizei to the KGB.

Getting rid of it is simple:

1. Force quit Safari by holding these three keys simultaneously: option command escape

When the following window appears choose Safari and then click the Force Quit button:

2. Acknowledge the following dialog with the Force Quit button again:

3. Then, hold a shift key while you launch Safari from the Dock or from your Applications folder.

This will launch Safari with your chosen "homepage" that can be set in Safari > Preferences > General:

If you were to launch Safari again without holding the Shift key, the previously loaded pages will load again (if you configured that option in System Preferences) and just re-load the problematic code that caused the bogus ransomware to reappear. If that occurs simply force-quit Safari again.