That's why you should always use an extension signer like Nos2x-Fox when signing up on different web clients... 

"The bottom line is that if you signed in to Coracle with your private key, it has been shared with me and with bugsnag. In practical terms, your keys should still be secure, since they were sent over TLS, and have been deleted. But there is no guarantee I can offer that they are in fact gone."

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