Glenn FleishmanSenior Contributor, Macworld

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Glenn Fleishman is the author of dozens of books, including mostly recently A Practical Guide to Networking, Privacy and Security in iOS 9. 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 to delete photos after they sync

A reader can't find a way to remove images if she doesn't delete before sync.

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Skeleton keys open doors for all governments, not just ours

You can't keep "bad guys" from using a key handed over to "good guys."

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Podcast 495: Bugs, more bugs, and the epoch fail

Don't set your iPhone to before 1970, don't update Creative Cloud, and don't expect Apple executives to openly admit iTunes is awful.

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InDesign low memory and old software on new platforms

A reader has an error with InDesign that appears to come from using it with a new OS.

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How to create email groups in iOS

A reader can't seem to use his OS X Mail groups in iOS.

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Channels review: Pair it with a HDHomeRun for TV broadcasts on your Apple TV

The Channels app lets you view over-the-air broadcasts and some cable programming on an Apple TV with the right third-party hardware.

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How to fix the t.co Twitter problem

When Twitter redirects don't work.

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Error 53 has the best and worst intentions

A error that indicates your iPhone has been bricked is a good thing done wrong.

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Is there a way to sort Safari bookmarks?

A reader had her bookmarks switch to alphabetical order.

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I have multiple Apple IDs. What happens if I delete one?

Our most common questions center around managing two or more Apple IDs.

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How updating your Mac's apps could allow man-in-the-middle attacks

The popular open-source Sparkle framework for OS X updates can be used insecurely.

Podcast 494: Error 53 is only helpful to robots

Humans need more information than a two-digit number when their iPhones go dead.

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iCloud Photo Library requires copying images to the Photos for OS X app

Photos lets you reference images as well as duplicating them into its library, but it won't upload them to iCloud.

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How to manage media when migrating to a Mac with a smaller drive

Can you selectively restore files, use cloud services, and an external drive? Yes, you can!

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Reasons to love TextEdit, a secret powerhouse of rich text

A utility that dates back before OS X to Next operating systems still delivers a punch for handling text formats and converting one to another.