Glenn FleishmanSenior Contributor, Macworld

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Glenn Fleishman is the author of dozens of books, including his newly released A Practical Guide to Networking, Privacy, and Security in iOS 10, a book that has information and step-by-step advice on connecting to and managing networks, and securing your data and your privacy. He's a senior contributor to Macworld, where he writes the Private I and Mac 911 columns and hosts the Macworld podcast, and contributes regularly to many periodicals.

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How differential privacy can crowdsource meaningful info without exposing your secrets

Apple threw out a loaded term and little information in its keynote about a new approach it's rolling out to learn user behavior while preserving privacy. It's good.

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How to delete locked images in Image Capture

A reader sees a lock icon and can't remove images in Image Capture.

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The problem with blocking phone numbers in iOS

A colleague can't get Telemarketer Bastards to stop calling him.

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How to find recently deleted media in Photos for Mac

Apple’s documentation to find deleted images and videos in Photos is incorrect, as a reader points out.

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Podcast 512: At WWDC 2016, it's all coming together

Glenn and Susie are joined by Macworld Staff Writer Caitlin McGarry to unpack all of Apple's WWDC keynote announcements. Or most of them, anyway!

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With macOS and iOS 10, Apple is changing how we pay online, inside Messages, and even by voice

Apple is getting closer to replacing your wallet, with Apple Pay in Safari for iOS 10 and macOS, and mobile payments apps like Square Cash coming to iMessages and Siri.

Your cell phone number could be hijacked unless you add a PIN to your carrier account

Two-factor authentication and other verification systems are for naught if someone can call your phone carrier and get your number transferred to them.

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How to manually exclude images from a Smart Album in Photos for OS X

A reader wants to customize the results of a Smart Album, and we found a workaround.

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App Store subscriptions don't solve problems for most developers

While any app has the potential to offer subscriptions under Apple's new guidelines, most apps can't take real advantage.

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FAQ: How Apple’s new App Store subscriptions affect you

Apple’s pre-WWDC surprise announcement of changes to the App Store’s subscription policy has left a lot of questions in the air. We have answers for many.

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Nope, you can't tell if someone has received your Mail Drop file

Apple doesn't provide an acknowledgement loop for email attachments sent by Mail Drop, and you can't "remove" files from Mail Drop either.

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Bluetooth's soft limits in OS X: Count your devices

A reader finds a common problem: Too many Bluetooth devices connected to one Mac can perform inconsistently.

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How to convince a partner or spouse to delete old emails

A reader writes in with a marital dispute that Mac 911 won't take sides on, but will provide a technical answer.

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Security or marketing: Allo and the price of listening in

Google's upcoming messaging app offers a strange choice between intelligent agent and strongly protected communications.

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How to set a custom order in an album in Photos for OS X

My 9-year-old came to me with a question about arranging photos in an album in OS X.