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I have a situation at hand; I am running Mac OS X 10.8.4.

Today I observed a different icon strangeicon on my Mac status bar. When I clicked on it it showed the name of computer of our vendor organization (a few members sit in our office). My bluetooth was on and I am connected to the LAN.

I searched on the net but couldn't find what this symbol means and if there was any attempt to get illegal access to my Mac. I have pretty sensitive data. Please help; if there was any access how can I see the log?

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It is the Apple Air Display icon; it just means there is an Apple TV or other device in your network that supports acting as a remote display for your computer. It does not mean your computer has been hacked. – Martijn Pieters Jan 6 '14 at 12:21
@MartijnPieters Can it be used to take screen shot of my computer? – amar Jan 6 '14 at 12:22
up vote 3 down vote accepted

The icon you see is the Airplay icon; it simply means that there is a device in your network that supports Airplay and can be used as a remote screen.

This is a standard feature of OS X, in combination with other products, like an Apple TV device. It does not mean your computer is compromised. Most likely someone on your network is running Air Display or similar software to act as a Airplay-compatible screen.

You are still in full control, only if you were to activate the feature would your screen be mirrored on the Airplay device.

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Thanku for setting my nerves at peace. – amar Jan 6 '14 at 12:28

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