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Updated on Jan 22, 2026science-and-technology

Why does Chrome show the “Not Secure” warning?

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Answered on Jan 21, 2026

Chrome shows the “Not Secure” warning when a website does not use HTTPS encryption.

This means the data shared on the site, like passwords or forms, is not fully protected.

It can also appear if the site has mixed content, an expired SSL certificate, or no security certificate at all.

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