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5 hours ago

Not if someone can issue the certificate signed by the CA your phone trust.

Imagine being in a cafe nearby, say, embassy of the certain north African country known for pervasive and wide espionage actions, which decides to hijack traffic in this cafe.

Or imagine living in the country where almost all of the cabinet is literally (officially) being paid by the propaganda/lobbying body of such country.

Or living int he country where lawful surveillance can happen without the jury signoff, but at a while of any police officer.

Maybe its not common but frequent enough.

This is stopped by certificate transparency logs. Your software should refuse to accept a certificate which hasn’t been logged in the transparency logs, and if a rogue CA issues a fraudulent certificate, it will be detected.

> Imagine being in a cafe nearby, say, embassy of the certain north African country known for pervasive and wide espionage actions, which decides to hijack traffic in this cafe.

How would they get your phone to trust their CA? Connecting to a Wi-Fi network doesn’t change which CAs a device trusts.