Hello Sigmoid users!

We wish to notify you of a recent incident - someone created an account and responded to many users with seemingly bot-generated messages. When confronted, they claimed to be a real person and linked to this: https://profiles.stanford.edu/melanie-zhang

The person associated with that link has confirmed to us they did not create the account, so someone was indeed trying to fool users on here. They may attempt again, so please report any suspicious activity using the Report option.