A Defensive Computing Checklist    by Michael Horowitz
NOTE: I gave a presentation on Defensive Computing at the HOPE conference in July 2022
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You can increase your privacy by hiding your actual phone number and having an alternate number to give out when appropriate. Probably doctors should have your real phone number but if you check your coat at a museum, and they ask for a phone number, the museum can have the alternate.

Another reason for a second phone number is to use with Signal. If you are interested in secure messaging, many people recommend the Signal app, which uses a phone number as the userid. So, maybe create a second number just for Signal.

There is more than one approach to creating a second phone number.


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