Optional security reminder whenever Firefox detects a login page

[ald2026]

Title: Optional security reminder whenever Firefox detects a login page

I would like Firefox for Android to offer an optional security feature that displays a reminder whenever a website requests login credentials.

Proposed behavior:

When Firefox detects a login form, display a message:

"Login page detected. If you arrived here through an email or message link, consider opening the website directly by typing its address into Firefox instead."

Provide two options:

- Continue to login
- Leave page

Important requirements:

- Trigger on legitimate and suspicious login pages alike.
- Do not rely on phishing databases or website reputation.
- Work with links opened from email applications such as Yahoo Mail and Gmail.
- Allow users to enable or disable this feature in Firefox's security settings.
- Do not collect or store login credentials.

Reason for requesting:

Phishing protection typically warns only about websites already identified as dangerous. A reminder on all login pages would encourage users to verify how they reached a website before entering credentials, including when a phishing website has not yet been identified.

This would be particularly useful for people who manually enter their passwords rather than using password managers.

[kelimuttu]

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