Autofill Saves More Than Just Passwords
Browser autofill saves emails, phone numbers, addresses, names, account passwords, and payment information. It's convenient, but only if the device itself is trustworthy, has a screen lock, and is not a shared device.
Check Device Use Context Before Saving Passwords
Using your primary device that is password or biometrically protected is relatively low-risk. Avoid saving passwords or login states on shared computers, cyber cafes, libraries, hotel business centers, friends' computers, or mobile phones that have been lent to others.
Regularly Clean Up Addresses, Phone Numbers, and Payment Information
Home addresses, frequently used phone numbers, recipient names, partial credit card numbers, and billing addresses can reveal personal information. When switching phones, selling old computers, or borrowing devices, ensure you check and remove expired addresses, unused payment information, and unnecessary form records.
Syncing Can Spread Risks Across Devices
Browser syncing transfers passwords, bookmarks, autofill data, and browsing history across different devices. The syncing account should use a unique password and enable two-factor authentication; also, remove unused or unknown synced devices.
Clean Up After Using Shared Devices
After temporary logins, do not save passwords, ensure to log out, and clear browsing history, cookies, and form data. Whenever possible, use your mobile network and personal devices for sensitive operations.
Autofill is not the problem; lack of management is. Knowing where data is saved on which devices and regularly cleaning up unnecessary items can help reduce the risk of data leakage while maintaining convenience.