The Best Way to Store Passwords So Hackers Can’t Steal Them

Getting an alert that one of your passwords has been compromised can be unsettling. But don’t panic — it doesn’t mean your phone has been hacked. It means your password appeared in a known data breach, and your device is telling you to act before anyone takes advantage.

This guide walks you through what to do on both iPhone and Android: how to find the affected accounts, how to change the passwords properly, and how to stop it happening again.

What “Compromised Password” Actually Means

When your phone flags a password as compromised, it means that exact password has appeared in a publicly known data breach — usually from a hack on a third-party website or service you signed up to at some point.

Your phone continuously checks your saved passwords against a database of leaked credentials. If there’s a match, it flags the account.

This is different from your phone being hacked. In most cases, the breach happened at the service you used — not on your device.

That said, the risk is real. In 2025 stolen credentials were the initial access vector in 22% of all breaches last year. And because many people reuse passwords, one compromised password can quickly become a much bigger problem.

How to Check for Compromised Passwords on Your Phone

On iPhone

The steps differ slightly depending on your iOS version.

iOS 18 and later

In iOS 18, Apple introduced a dedicated Passwords app — a standalone manager that replaced the older Settings menu.

1. Open the Passwords app on your Home Screen (the key icon).
2. Authenticate with Face ID, Touch ID, or your passcode.
3. Tap Security at the bottom of the screen.
4. Any accounts with compromised, weak, or reused passwords will be listed here.

Fig 1. Checking password security issues on iOS 18.

How to Fix a Compromised Password

The process is essentially the same on both platforms once you’ve found the flagged accounts.

Step 1: Select the affected account

After you have identified the risky passwords you need to change, go to the relevant website or app and start the process to change your password.

Step 2: Create a strong, unique password

When you reach the password change page, don’t swap in something similar. Use a completely new password that:

• Is at least 12–16 characters long
• Uses a mix of uppercase and lowercase letters, numbers, and symbols
• Isn’t used on any other account

Both iPhone and Android will suggest a strong password automatically — use it. It’s generated randomly, which makes it far harder to crack than anything you’d come up with yourself.

Step 3: Save it to your password manager

When prompted, let your phone save the new password. On iPhone it saves to the Passwords app (or iCloud Keychain on older iOS). On Android it saves to Google Password Manager. Either way, your phone will fill it in automatically next time — you won’t need to remember it.

Step 4: Work through every flagged account

Repeat the process for each account listed under Security. Prioritize anything high-value: email, banking, Apple ID or Google Account, and social media.

What to Do Next

Turn on two-factor authentication

Two-factor authentication (2FA) means that even if someone has your password, they still need a second verification step to get in — usually a code from an app or a biometric check.

On iPhone, enable it for your Apple ID by going to Settings > [Your Name] > Sign-In & Security > Two-Factor Authentication.

Fig 3. Checking 2FA on iOS

On Android, enable it for your Google Account by going to Settings > Google > Manage your Google Account > Security and Sign-in > 2-Step Verification.

Fig 4. Checking 2FA on Android

For other accounts (banking, social media, email), look for a 2FA or “two-step verification” option in their security settings. An authenticator app — such as Google Authenticator, Authy, or the built-in code generator in Apple’s Passwords app — is more secure than SMS-based codes.

Check for reuse elsewhere

Your phone’s security check only covers passwords it has saved. If you used the same compromised password on accounts not stored in your password manager, go and change those manually too.

The Best Password Managers for iPhone and Android

If this situation has exposed a gap in how you manage passwords, a dedicated password manager is worth using. They generate strong, unique passwords automatically and fill them in across apps and browsers — you only need to remember one master password.

Here’s a quick look at your main options:

• Apple Passwords (iPhone/iPad/Mac — free) Built into iOS 18, this is the easiest starting point for iPhone users. It syncs across Apple devices via iCloud and alerts you to weak or breached passwords. It works best within the Apple ecosystem — syncing to Android or Windows is limited.
• Google Password Manager (Android/Chrome — free) Android’s built-in equivalent. It saves and autofills passwords across Android apps and Chrome, and flags compromised credentials via Password Checkup. Like Apple Passwords, it’s convenient but tied to Google’s ecosystem.
• 1Password One of the most polished cross-platform options, available on iPhone, Android, Windows, and Mac. Paid only (around $3/month), but widely rated for its usability and security features, including passkey support.
• Bitwarden Open-source and independently audited. The free tier covers most users’ needs — unlimited passwords, sync across devices, and autofill on both iOS and Android. A premium plan (around $10/year) adds dark web monitoring and additional 2FA options.
• Dashlane A premium option with strong security credentials and an intuitive interface. Includes dark web monitoring for up to five email addresses and a built-in VPN. Pricing starts at around $45/year.
• NordPass From the makers of NordVPN. Clean interface, solid encryption, and a generous free tier for single-device use. A good fit if you’re already in the Nord ecosystem.
• Keeper A security-focused option with consistent design across all platforms. Strong on offline access and 2FA support.
• Proton Pass From Proton, the company behind ProtonMail. A privacy-first option with a solid free tier that’s growing quickly.
• RoboForm One of the oldest managers around — reliable and well-regarded for form-filling accuracy, with competitive pricing.

If you’re not sure where to start, Bitwarden is the best free option for most people. 1Password is worth paying for if you want the slickest experience across both iPhone and Android.

Wrapping Up

A compromised password alert is your phone doing exactly what it should — catching a problem before it becomes a crisis. The fact you’re seeing it is a good thing. What matters now is acting on it.

Change the flagged passwords, make each one unique, and turn on two-factor authentication for anything important. If managing passwords has felt like a hassle up to now, this is a good moment to let a password manager take that off your plate. One tool, one master password, and you’re covered across every account.

FAQs

Does a compromised password mean my phone has been hacked?

Not necessarily. In most cases it means the password appeared in a breach at a third-party service — not that your device was compromised. Follow the steps above to change the password and protect the affected account.

What’s the difference between a compromised password and a weak password?

A compromised password has been found in a known data breach. A weak password is one your phone considers easy to guess — even if it hasn’t appeared in a breach. Both should be changed.

Will changing the password in my phone’s password manager update it on the website?

No — updating it in the password manager only changes the saved record on your device. You need to visit the actual website or app to change the live account password. Use the “Change Password on Website” (iPhone) or “Change password” (Android) buttons to go there directly.

Is the built-in password manager on my phone secure enough?

For most people, yes. Apple Passwords and Google Password Manager both use encryption and require biometric authentication to access. The main reason to use a third-party manager is if you want your passwords to sync seamlessly across both iPhone and Android, or across devices on different platforms.