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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A reminder to iCloud users: Mail Drop attachments expire and disappear

It's a way for iCloud Mail users to send large files, but remember, they won't stay on file for very long.

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Should you look for an alternative to Apple’s AirPlay?

It sure feels like Apple is getting ready to to discontinue the streaming technology.

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How to choose the best Wi-Fi replacement for your Apple AirPort routers

Amid uncertainty about Apple's plans for its Wi-Fi routers, what other options work best for Mac, iPhone, and iPad owners?

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Podcast 543: What’s up with WhatsApp

Security is still on our minds. Well, that and juicy iPhone 8 rumors.

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How to be sure a drive has ejected from a Mac

macOS has several ways to properly eject a storage device.

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Putting teeth into enforcing Internet of Things security, but for how long?

The FTC has filed a complaint based on some of the security practices (and alleged lack thereof) by D-Link.

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Meitu's photo-effects app tracks users without disclosing enough

It's not malware, but the long-popular Chinese app's U.S. breakout moment was marred by a lack of disclosure and leftover code. Its maker promises to improve.

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A drive and a partition: How to understand the difference when erasing Mac disks

When you want to format a hard drive, it helps to know the difference between a partition and a drive.

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Podcast 542: They’re always listening

Guest Jonathan Zdziarski talks about how to secure your data and communications in iOS and macOS.

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The backdoor that never was, and how to improve your security with WhatsApp

A Guardian report says WhatsApp has a backdoor that could allow messages to be intercepted by unwanted parties. That’s not accurate.

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How to stop macOS Photos from re-uploading all your images and videos

The spoiler: there’s no way to force iCloud Photo Library to recognize existing media, but you can pause or stop the uploads.

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Anonymous browsing with Tor reduces exposure but still has risks

The pros and cons of using Tor to browse anonymously on your Mac, and how to get started.

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How to block certain calls in iOS 10

Gain more control over what calls you receive with these apps.

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How to kill the evercookie and supercookie, the cockroaches of tracking

Unscrupulous ad networks and others bury tracking IDs in your browser like ticks under your virtual skin. Can you exterminate all their traces?

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How to browse privately and avoid persistent tracking on a Mac, iPhone, and iPad

All browsers let you go incognito when you want to prevent leaving virtual footprints. On the Mac, Safari, Firefox, and Chrome have private browsing, and Safari offers this on iOS too.