These mailing lists received a phishing scam email, asking recipients to
reply to an external (non-w3.org) email address. This is a common
phishing technique and generally speaking you be wary of email requests
soliciting identifying information.
We would never ask someone to send their credentials via email.
If you sent your credentials please change your password immediately
using the link below and send me a private mail (not to the mailing
lists) so that I can gather data on this scam.