What Is a Password Health Check and How Does ARK Help
A password health check is a security scan that audits your stored passwords for exposure in data breaches, weak strength, and reuse across accounts. ARK by MRVL includes password health checking as part of its Shield tier, alongside breach detection and dark-web monitoring.
How Password Health Checks Work
Password health checks analyse passwords stored on your device against known breach databases and security standards. The scan looks for three main issues: passwords that appear in public breach lists (meaning they've been compromised), passwords that are too weak (short, predictable, or common), and passwords reused across multiple accounts (which means one breach compromises many logins). ARK's password health check runs on-device first, keeping your actual passwords private. If a password matches a known breach, ARK flags it and recommends you change it immediately. The scan is designed for privacy-conscious users who want to know their exposure without uploading sensitive data to third-party servers.
What ARK's Password Health Feature Includes
ARK's password health check is part of the Shield subscription tier (£2.99 per month or £29.99 per year, as of June 2026). The feature scans passwords stored in your device's native password manager or autofill system. Beyond password health, Shield also includes dark-web monitoring to detect if your email appears in leaked credential dumps, a Wi-Fi analyser to check for network vulnerabilities, and a 2FA audit to confirm two-factor authentication is enabled on critical accounts. Together, these tools give a complete picture of your digital exposure. ARK also generates a 0-100 security credit score that breaks down specific risks and recommends one-tap fixes for each issue found.
Why Password Health Matters
Most people reuse passwords or use weak variations across accounts. If one service suffers a breach, attackers can try your email and password on banks, email, social media, and work accounts. A single compromise cascades into multiple breaches. Password health checks catch this before criminals do. They also flag passwords exposed in major breaches like LinkedIn, Facebook, or Equifax leaks, which are publicly traded on the dark web. ARK's approach is privacy-first: the scan happens on your phone, not on a remote server. Your actual passwords are never sent anywhere. Only the breach status and strength rating are recorded securely on your device.
Is ARK a Password Manager
No. ARK is not a password manager and does not store or create passwords. It audits passwords already saved in your device's native password manager (iOS Keychain, Google Password Manager, etc.) and flags those at risk. If you need to create strong passwords and store them securely, use a dedicated password manager like Bitwarden, 1Password, or Apple Keychain. ARK complements password managers by scanning them for breach exposure and weak patterns. For comprehensive digital safety, you might also monitor breach exposure through tools like ARK's dark-web monitor and pair it with two-factor authentication audits to lock down access to critical accounts.
Free vs Shield Password Health
ARK's free tier includes permission auditing and stalkerware detection but not password health checks. Password health checking requires the Shield subscription. For £2.99 per month or £29.99 per year, Shield unlocks password health alongside breach detection, dark-web monitoring, phishing scanning via QR or URL, and Wi-Fi security analysis. A third tier, Fortress (£7.99 per month or £79.99 per year), adds data-broker exposure checks, GDPR data-subject request automation, SDK X-Ray scanning for third-party tracking, and voice-clone risk assessment. Most users find Shield sufficient for personal device security; Fortress is targeted at small business owners managing multiple devices or privacy-focused individuals concerned with data-broker exposure.
How to Use ARK Password Health in Practice
When you run a password health scan in ARK Shield, the app checks your device's stored passwords against known breach databases and applies security rules (minimum length, character variety, uniqueness). Any password flagged as weak or compromised appears in your results with a recommended action. ARK provides one-tap deep-links to change that password in the relevant app or website. For example, if your Gmail password is weak, tapping the result opens Gmail's password change page. This design removes friction from remediation. You are not locked into using ARK's recommendations; the tool simply highlights the risks so you can decide whether to act. As of June 2026, password health checks are available exclusively on iOS through the Shield subscription tier.
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Frequently asked questions
What happens if my password is found in a data breach?
ARK flags the password and recommends you change it immediately. The app provides a one-tap link to the relevant service so you can reset it without leaving ARK. Changing a compromised password prevents attackers from using that credential elsewhere.
Does ARK store or upload my passwords?
No. ARK scans passwords stored on your device (in iOS Keychain or autofill) but does not store, upload, or transmit them. Breach and strength checks happen on-device when possible. Your passwords remain private.
Is ARK a VPN or antivirus?
No. ARK is a mobile security auditing tool, not a VPN or antivirus. It scans permissions, detects stalkerware, checks for breach exposure, and audits password health. Use a separate VPN for encrypted browsing and antivirus for malware protection if needed.
Can I use ARK with my existing password manager?
Yes. ARK audits passwords already saved in your device's native password manager. It does not replace a password manager; it complements one by flagging weak or compromised credentials.
How much does password health checking cost?
Password health is included in ARK's Shield tier at £2.99 per month or £29.99 per year. The free tier does not include password health checks.
What is ARK's overall security score?
ARK generates a 0-100 mobile security credit score based on device permissions, network exposure, breach history, and app security. Password health is one component of this score. Higher scores mean fewer vulnerabilities.