You'll be asked to enter your Apple ID and password to verify iCloud and Keychain options.It will show a progress bar for several minutes On my MacBook Air it took just 12 minutes. Do not interrupt the update by unplugging or restarting the computer.(Another option is to download Apple's manual installer (Opens in a new window)). If other updates are offered, run those as well as the OS X updates. You'll have to agree to an Apple user license agreement. The Mac App Store will open, showing you available updates.Tap the Apple icon at the top left of your Mac's main menu bar, and choose 'Software Update.'.Make sure your Mac is plugged in if it's a laptop.You could just save cricital files to external storage as a half measure.) (But if you don't have access to these, it's more important to perform the upgrade, even without a backup. Back up your Mac using Time Machine or another backup system.

Make sure that you're on a trusted network such as your home or work connection.Luckily, Apple has patched the vulnerability-and added a few desirable user feature enhancements, too boot. An attacker on the same Wi-Fi network could spoof the bank's site and see any information you send. PCMag security expert Fahmida Rashid said users should update immediately, noting that the bug allows attackers to 'launch a man-in-the-middle attack and eavesdrop on all user activity.' It does this by incorrectly validating the certificates that prove that, for example, the Web page you're seeing is really coming from your bank. The vulnerability comes from an improper implementation of SSL and TLS-the standard encryption systems used for secure Internet connections. Tech observers were seriously taken aback when Apple took several days to address a security flaw in OS X 10.9 Mavericks after quickly fixing the same bug in iOS. How to Set Up Two-Factor Authentication.How to Record the Screen on Your Windows PC or Mac.How to Convert YouTube Videos to MP3 Files.How to Save Money on Your Cell Phone Bill.How to Free Up Space on Your iPhone or iPad.How to Block Robotexts and Spam Messages.

Os x 10.13 update