Reprinted from TidBITS by permission; reuse governed by Creative Commons license BY-NC-ND 3.0. TidBITS has offered years of thoughtful commentary on Apple and Internet topics. For free email subscriptions and access to the entire TidBITS archive, visit http://www.tidbits.com/ Safari 10.0 Agen G. N. Schmitz Apple has released [1]Safari 10.0 for OS X 10.10.5 Yosemite and 10.11.6 El Capitan (it's included with macOS 10.12 Sierra; see '[2]Highlights and Tips for macOS 10.12 Sierra,' 20 September 2016). While it doesn't include some of the features available in Sierra (such as Picture-in-Picture), the Web browser now prefers displaying HTML 5 video whenever available, enhances security by running plug-ins only on authorized Web sites, improves formatting in Reader view, and remembers the zoom level for each Web site you visit. The update also addresses several security issues, including the usual memory corruption issues in WebKit, validation issues in Safari Reader, and address bar spoofing in Safari Tabs ' all of which could compromise user information if visiting a maliciously crafted Web site. Safari 10.0 is available only via Software Update. (Free, [3]release notes, 10.10+) References 1. http://www.apple.com/safari/ 2. http://tidbits.com/article/16764 3. https://support.apple.com/en-us/HT207157 .