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Privacy & Security guides.
Practical advice on privacy, spam and staying reachable, from the team behind Second Phone Number.
Privacy & Security articles
Privacy & Security
Why University Students Need a Second Phone Number in 2026
In May 2026, the Canvas LMS breach exposed data from approximately 275 million users including students at institutions worldwide. The data included personal messages.
Andrew Miller, 6 min read
Privacy & Security
Free Trials Always Ask for Your Number. Here Is Why That Is a Problem
Subscription boxes are a specific category worth examining because they collect more personal information than a typical free trial and they do so in a context.
Andrew Miller, 6 min read
Privacy & Security
Protecting Your Phone Number During Divorce and Separation
A shared phone plan gives the account holder access to call logs, data usage, billing history, and in some cases location data for every line on the account.
Olivia Reynolds, 7 min read
Privacy & Security
Why Giving Your Number at a Car Dealership Costs You More Than You Think
A finance application collects a significant amount of personal information: full name, date of birth, employment details, income, existing financial commitments, and phone number.
Olivia Reynolds, 6 min read
Privacy & Security
Should You Give Your Real Estate Agent Your Personal Phone Number?
Your personal number can remain for family, friends, banking, and important accounts while a second number handles temporary property-related communication.
Andrew MillerUpdated , 6 min read
Privacy & Security
Hiring a Contractor? Think Twice Before Giving Them Your Personal Phone Number
A second number gives you a dedicated line for arranging estimates, appointments, repairs, deliveries, and follow-ups without exposing your primary personal number.
Andrew Miller, 8 min read
Privacy & Security
Airbnb Hosts: Should Guests Have Your Personal Phone Number?
You can give guests a working contact number, but using a separate phone number is often a better way to keep hosting communication separate.
Olivia Reynolds, 7 min read
Privacy & Security
Freelancers: Should You Give Clients Your Personal Phone Number?
SecondLineNumber’s current guide explains how two numbers can work from the same phone, making this setup practical for people who need separate communication channels.
Andrew Miller, 7 min read
Privacy & Security
Should You Give Your Landlord Your Real Phone Number? What Tenants Do Not Think About
When you rent through a letting agent, your phone number does not go only to your landlord. It goes into the letting agent’s internal system first.
Olivia ReynoldsUpdated , 6 min read
Privacy & Security
Two Numbers, One Phone: The Simplest Way to Separate Work and Personal Calls
A second phone number app gives you a fully functional second number on your existing phone. Calls and texts to that number come through to the same device you already carry.
Andrew MillerUpdated , 6 min read
Privacy & Security
Facebook Marketplace and Your Phone Number: What Buyers and Sellers Do Not Realise
A buyer contacts you. They seem legitimate. They say they want to make sure you are a real person before committing to the purchase.
Olivia ReynoldsUpdated , 6 min read
Privacy & Security
Creators: Do Not Put Your Personal Phone Number in Your Bio
Creators face a version of the phone number exposure problem that is more intense than the average person’s, for a specific reason: they deliberately cultivate a large, mixed audience.
Olivia ReynoldsUpdated , 6 min read
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