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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Photosweeper 3 review: Sorts out the image duplicates in your Mac’s media libraries and folders

If you have many identical or similar copies of photos, wasting space or making it hard to find the best version, Photosweeper can sort that mess.

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How to set a different return address in Mail for macOS

You can have multiple accounts set up in Mail, and select among return addresses.

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Can you use older versions of Apple’s Pages on macOS Sierra?

Don’t like the current version of Apple’s word processing app? You’re not alone.

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You can’t avoid the relentless emails warning of hacking attempts

A modern problem: if you’ve secured accounts well, you could be bombarded with break-in notifications.

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How to set up an external drive as a Time Machine destination for multiple Macs

Step-by-step directions on connecting Macs to a shared hard drive for backup.

Podcast 557: Pondering the Siri Speaker rumors and watchOS 4

Looking ahead to WWDC, a focus on improving Siri could benefit all of Apple’s platforms—and help break down the barriers between them.

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Want to recover a FileVault-encrypted drive without a recovery key? You’re out of luck

One of the downsides of protecting your data from others is how easy it is to lose it all.

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Uber’s not alone in tracking users when apps are deleted

But it’s unclear how widespread the practice is, whether Apple plans a crackdown, and how deeply it has an impact on user privacy.

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New macOS malware OSX/Dok requires a lot of manual steps

OSX/Dok is now blocked, but it didn’t rely on any system exploits to install.

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PDFpen 9 and PDFpenPro 9 review: PDF-editing apps get solid enhancements over previous versions

The latest versions of Smile's PDF-editing apps for the Mac get richer and deeper options, but remain much the same.

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Podcast 556: Uber my dead body

Uber got in some hot water with Apple, but it was all handled behind the scenes, while Glenn thinks that users should have been alerted.

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Little Flocker reincarnates as Xfence, a free beta from F-Secure

A ransomware-protection tool will continue in development as Xfence.

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How to upgrade an old iPhoto library to Photos (or recover it)

A reader has a 2008-era iPhoto library and can't import it correctly directly into Photos.

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Why read/write permissions go awry with macOS File Sharing

Some macOS problems don't have an easy fix. This is one of them.