How to Protect Your Privacy Online: A Practical Baseline

Online privacy is not a single setting; it is a set of habits. None of them are exotic, and together they close the most common ways people get compromised.

Use a password manager with unique passwords Reusing passwords is the single biggest cause of account takeovers. When one site leaks, every account sharing that password is exposed. A password manager generates and stores a unique credential for every site, so one breach stays contained.

Move important accounts to passkeys or an authenticator app SMS codes can be intercepted or phished. Passkeys and authenticator apps cannot be phished in the same way, because the code is generated on your device and bound to the site you are visiting. Start with your primary email account — it is the recovery anchor for everything else.

Share your phone number carefully Treat your real phone number like an address: give it out when necessary, not by default. For low-stakes sign-ups, public forums, or marketplace listings, a temporary number keeps your primary number out of marketing databases and data breaches. Read the limits of temporary numbers before relying on one — and never use a shared number for banking, government, healthcare, or account recovery.

Review app permissions and privacy settings Location, contacts, and photo access are frequently granted without thought. Review them periodically on both mobile and desktop, and revoke anything an app does not genuinely need.

Keep software updated Updates close known holes that attackers already exploit. Enable automatic updates wherever possible, including your browser and password manager.

Watch for phishing — including 'verification code' scams The most effective attacks today do not break cryptography; they ask you to hand over access. If someone asks you to read back a verification code, treat it as hostile.

A realistic baseline Unique passwords everywhere, a passkey or authenticator on your email, automatic updates, and careful phone-number sharing will put you ahead of the vast majority of users. Privacy tools — including temporary numbers — work best on top of that foundation, not instead of it.