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Browser Autofill Phishing
Your browser or password manager’s autofill might be inadvertently giving away your information to unscrupulous phishers using hidden text boxes on sites.
Finnish web developer and hacker Viljami Kuosmanen discovered that several web browsers, including Google’s Chrome, Apple’s Safari and Opera, as well as some plugins and utilities such as LastPass, can be tricked into giving away a user’s personal information through their profile-based autofill systems.
The proof-of-concept demo website consists of a simple online web form with just two fields: Name and Email. But what's not visible are many hidden (out of sight) fields, including the phone number, organization, address, postal code, city, and country.
This is a simple demonstration of form fields hidden from the user, but will be filled anyways when using the browser form autofill feature, which poses a security risk for users, unaware of giving their information to the website.
Google Chrome behaviour
Here's the demo in action on the Google Chrome Browser:
How to Turn Autofill Feature Off
Autofill feature is turned on by default. Here's how to turn this feature off in Chrome:
Go to Settings → Show Advanced Settings at the bottom, and under the Passwords and Forms section uncheck Enable Autofill box to fill out web forms with a single click.
Go to Settings → Show Advanced Settings at the bottom, and under the Passwords and Forms section uncheck Enable Autofill box to fill out web forms with a single click.
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