この情報は秘密です。の英語

This information is confidential.

This communication is classified.

This is a secret.

Keep this information under your hat.

This is a secret.

It's secret.

It's a secret.

It is an open secret.

discretion in keeping secret information

keep the information close

There was a leak of secret information.

Please keep this information to yourself.

a surreptitious informant

Don't repeat the secret.

to be able to provide secret information

I know his secret.

divulge confidential information or secrets

treat the information as confidential

I tell you this in privacy.

to disclose a secret to one―reveal a secret to one―divulge a secret to one―confide a secret to one―unbosom oneself of a secret to one―unburden one's heart of a secret to one―let one into the secret

to clear up a mystery

On no account can I disclose the secret

I will never tell.

information about others' secrets

That is being hidden in a hidden place.

to keep the matter （a） secret―preserve secrecy

to keep the matter a secret

Do you want to know a secret?

Keep the secret.

This secret must be strictly kept.