feat: Unauthorized sign-in

[gkats]

Important

🔎 Previews:

• https://clerk.com/docs/pr/1668/customization/account-portal/getting-started
• https://clerk.com/docs/pr/1668/customization/account-portal/overview
• https://clerk.com/docs/pr/1668/security/unauthorized-sign-in

Explanation:

We're launching a new feature that detects sign-ins from unrecognized devices and sends a notification to the users.

This PR:

• Added a section under Security for unauthorized sign-ins.
• Added the unauthorized sign-in page in the Account Portal docs.

[github-actions]

Hey, here’s your docs preview: https://clerk.com/docs/pr/1668

[victoriaxyz]

I don't see the New client sign in email template. Has it been renamed to Magic link - Sign in?

Suggested change

	1. Navigate to the [Clerk Dashboard](https://dashboard.clerk.com/last-active).
	1. In the secondary navigation header, select **Configure**.
	1. From the navigation sidebar, select **Emails** under the **Customization** menu group.
	1. Locate the **New client sign in** email template and click on the toggle next to it in order to disable the feature.
	1. You can customize the email content, similar to how you can customize the rest of the email templates. See [Email and SMS templates](/docs/authentication/configuration/email-sms-templates) for more information.
	1. In the Clerk Dashboard, navigate to the [**Emails**](https://dashboard.clerk.com/last-active?path=customization/email) page.
	1. Select the **Magic link - Sign in** option. You'll be redirected to the template settings page.
	1. Toggle **Delivered by Clerk** to enable the feature.
	1. Select **Apply changes**.
	1. To customize the email content, see the [Email and SMS templates](/docs/authentication/configuration/email-sms-templates) guide.

[gkats]

@victoriaxyz The feature is not yet live. The release is a bit blocked. I thought I would start working on the docs while I was waiting to be unblocked.

The New client sign in email template is not visible in production yet. It's present on our staging environment, and after we release the feature in production we can merge this PR.

[victoriaxyz]

No worries! You can replace the title with New client sign in once the feature is released.

[gkats]

There's another change that's yet to be released and that is the part about enabling/disabling the email from the list.

In the future, dashboard users will be able to toggle certain emails on or off. This is not yet live. I've updated the instructions with your suggestions for now, and I'll make sure I change them once the new functionality becomes available.

Thanks for taking a look and sorry for any confusion.

[victoriaxyz]

All good, let me know when you need a new review.

[alexisintech]

Suggested change

	1. Toggle **Delivered by Clerk** to enable the feature.
	1. Toggle **Delivered by Clerk** to enable or disable the feature.

[gkats]

This will change soon. The correct way to enable/disable the feature needs an Emails page redesign which should be landing soonish.

I won't merge this PR before the new redesign is live and I update this step.

[alexisintech]

converting to draft until the feature is ready for release, and then we can revisit this pr and make the necessary updates!