Why Using the Same Password Everywhere Is Dangerous — And the Simple Fix

Here’s something most people don’t know: when a company gets hacked and passwords leak, the first thing criminals do is try those same email-and-password combinations on dozens of other websites. Your bank. Your email. Your Amazon account.

If you use the same password in more than one place, one hack somewhere can unlock everything.

This happens thousands of times a day, to people who did nothing wrong. They just reused a password.

How common is this problem?

Very common. A 2023 study found that 65% of people reuse passwords across multiple sites. It’s not a character flaw — it’s just that remembering a different password for every account is genuinely hard. Nobody’s memory is designed for this.

The good news: there’s a solution that means you only have to remember one password, and it’s safer than anything you could come up with on your own.

The fix: a password manager

A password manager is an app that remembers all your passwords for you — locked behind one master password that only you know. You unlock the app once, and it fills in the right password on every website automatically.

It also creates strong, unique passwords for you. Instead of “fluffy1954,” your bank password becomes something like “Tr9$mK#vLp2z” — impossible to guess, impossible to reuse because you’d never remember it anyway, and automatically entered for you so you never have to type it.

Popular options (all free for basic use):

Bitwarden — free, trusted, works on iPhone, Android, and computers
Apple Keychain — built into iPhones and Macs, simple to use if you’re already in Apple’s world
Google Password Manager — built into Android phones and Chrome browser

I set these up for clients as part of the Senior Tech Safety Check. It takes about 20 minutes to get started, and most people find it actually makes logging in easier, not harder.

What about writing passwords down?

Writing passwords in a notebook isn’t the worst option — it’s much better than reusing passwords. Just keep the notebook somewhere safe, don’t label it “passwords,” and don’t include your email address or username alongside each entry.

The main risk with a notebook is that someone physically gets access to it. A password manager stored in your phone is harder to steal.

Passwords that are always worth fixing first

If you can only change a few passwords, start with these — they protect the most:

Your email — this is the master key. If someone gets into your email, they can reset every other password you have.
Your bank or financial accounts
Your phone’s lock screen PIN or passcode
Medicare and Social Security online accounts (if you have them)

Make these four different from each other and different from everything else, and you’ll be in much better shape.

A note on “secret questions”

Many sites ask security questions like “What was the name of your first pet?” The problem: those answers are often findable on social media or by anyone who knows you.

The trick: give made-up answers and store them in your password manager. Your “first pet’s name” can be “Zebra47” — whatever you like, as long as you write it down somewhere safe.

Passwords are one of several things I review during a Senior Tech Safety Check. By the end of the visit, your most important accounts will have strong, unique passwords stored safely — and you’ll know how to access them.

Learn about the Safety Check →