from an untrusted site or that the computer treats a dmg file as suspicious because it contains an installable program. To get it from the real source, go to Mozilla site (http://www.mozilla.org/en-US/firefox/all.html) and download form there. If the message comes back, I would disregard it.
I have recently gotten a macbook pro and I need to download firefox. My internet people said I need it because they can't use safari at all and that is what my schooling requires which is who i got the mac from. I went through google chrome it put me to c/net. Now message says: This type of file can harm your computer. Do you want to keep firefox 9.0.1.dmg anyway?
Im pretty new to computers in general so what exactly does that mean?

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