Apple has released Security Update 2013-003 for OS X 10.8 Mountain Lion (20.4 MB) as well as for 10.7 Lion and 10.6 Snow Leopard, both of which receive two versions: Lion (61 MB) and Lion Server (111.3 MB), plus Snow Leopard (349.5 MB) and Snow Leopard Server (424.5 MB). All versions of this security update close vulnerabilities with buffer overflows within QuickTime that could lead to “unexpected application termination or arbitrary code execution.” In particular, the updates deal with buffer overflows in Sorenson and H.264 encoded movie files, plus the handling of “mvhd” movie header atoms. (Free)
Option-Click AirPort Menu for Network Details
If you hold down the Option key while clicking the AirPort menu in Mac OS X 10.5 Leopard, you'll see not just the names of nearby Wi-Fi networks, but additional details about the selected network. Details include the MAC address of the network, the channel used by the base station, the signal strength (a negative number; the closer to zero it is, the stronger the signal), and the transmit rate in megabits per second showing actual network throughput. If you hover the cursor over the name of a network to which you're not connected, a little yellow pop-up shows the signal strength and type of encryption.
Security Update 2013-003 for Mountain Lion, Lion, and Snow Leopard
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