Apple has released Safari 7.0.4 for users of OS X 10.9 Mavericks and Safari 6.1.4 for users of 10.8 Mountain Lion and 10.7 Lion, both of which fix multiple critical vulnerabilities associated with WebKit. According to the security note for these updates, both versions of Safari fix a swath of memory corruption issues within the rendering engine that could lead to arbitrary code execution after visiting a maliciously crafted Web site. They also deal with a problem with handling Unicode characters in URLs that could enable a maliciously crafted URL to send out an incorrect postMessage origin. Both updates are available only through Software Update. (Free, 10.9+/10.7–10.8)
Viewing Wi-Fi Details in Snow Leopard
In Snow Leopard, hold down the Option key before clicking the AirPort menu. Doing so reveals additional technical details including which standards, speeds, and frequencies you're using to connect, as well as what's in use by other networks. With the Option key held down and with a network already joined, the AirPort menu reveals seven pieces of information: the PHY Mode, the MAC (Media Access Control) address, the channel and band in use, the security method that's in use, the RSSI (Received Signal Strength Indication) measurement, the transmit rate, and the MCS Index. In Leopard, some, but not all, of these details are revealed by Option-clicking the AirPort menu.
Safari 7.0.4 and 6.1.4
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