This content was published by Andrew Tomazos and written by several hundred members of the former Internet Knowledge Base project.

cc-headers

CC-Headers pose an often overlooked "security problem". If you specify other peoples' email address in the CC-headers, you give out their email adress to everyone else on the list. Even if you trust everyone the email goes to, undetected malicious software on one of the recipients' computers could make use of the email adresses.
Also, people (like myself) often extract email adresses from CC-headers, and this would lead to the distribution of one specific Segmail adress to multiple users, which is against the concept of Segmail. Thus, Segmail should only include names of the recipients in the headers, not their adresses.

[This has been addressed in the spec. Thanks. AT]

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