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macrumors regular
Original poster
Apr 20, 2010
I could not find a specific forum on this topic,I hope some here can help.

Over the weekend I received calls from 2 credit card companies indicating that several high dollar purchases had been made,some outside the U.S. These were fraudulent charges.

The 2 credit cards were never used on any site together. I am racking my brain on where they could get both numbers,regardless I would like to add security to my IMac and protect it as much as possible in the event it has been hacked. Any recommendations of the best Mac security is greatly appreciated.

Thank you for your time and comments in advance.


macrumors 68040
Jul 13, 2008
The odds of your Mac being "hacked" to access two credit card numbers is close to zero. More likely that someone just looked at it while you were using it. Or got your numbers in innumerable other ways.

You can password protect your Mac in numerous ways. And your post is so vague no one here will be able to help you much.


macrumors 68000
Nov 15, 2007
Sounds like a security breach on your internet connection. People with nothing better to do all day long create bots, or automated programs that run random port scans. When one is found, they can enter your computer and see everything you have on it, emails, programs, files, etc.

None of this has anything to do with your Mac or the OS. There are proxy servers you can use and other programs that bounce your IP around different places so it is constantly changing, and in many cases simply cannot be identified. These are all good things to use anyway, because it keeps the prying eyes of the G-men out of your computer files as well - not just some criminal organization buying and selling credit card data.


macrumors 6502a
Mar 2, 2009
Did they ask for personal info or ask to verify anything to make sure it was you? Did you get the names of the cards and which company then call them back?

Sometimes, and has happened before, social engineering can be easily used by scare tactics to get some personal info from you.
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