Lessons/Identity

Identity Theft: Locking Your Digital Perimeter in 7 Steps

Identity· Beginner· 9 min read

Identity theft rarely starts with a hooded hacker. It starts with a breached email address you used in 2019 and a password you reused on a forgotten forum. One afternoon of cleanup closes nearly every gap.

The seven-step checklist

1) Check Have I Been Pwned for every email you use. 2) Move to a password manager — every site, unique, 20+ characters. 3) Turn on app-based 2FA (not SMS) on email, banking, and government logins. 4) Set up Singpass / national-ID login alerts. 5) Freeze your credit file if your jurisdiction supports it. 6) Audit OAuth apps connected to Google/Apple/Microsoft. 7) Rotate the email you use for finance to a private alias never shared publicly.

Why SMS 2FA is not enough

SIM-swap attacks remain trivial in most jurisdictions. App-based authenticators (Authy, 1Password, Aegis) or hardware keys (YubiKey) are required for any account holding money or your identity.

Red flags
  • Same password reused across sites
  • SMS as the only second factor on banking
  • Personal email used as login on government portals
  • Old breached passwords still active on key accounts
Action playbook
  1. 1.Run Have I Been Pwned on every email and rotate any breached password.
  2. 2.Install a password manager today; migrate the 20 most important accounts first.
  3. 3.Replace SMS 2FA with app or hardware keys on email and finance.
  4. 4.Set up Google/Apple security checkup; revoke any OAuth app you no longer use.

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