But I didn't take the bait. I found confirmation of this scam at https://forum-en.guildwars2.com/forum/support/account/A-Note-about-Phishing-Emails/first#post1862539
From: ArenaNet <noreply@guildwars2.com> ( But not really )
Subject: Guild Wars 2 Account Will Be Shut Down Inform
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Guild Wars Account Will Be Shut Down Inform
We are sorry to inform you that your login account will be shut down or partially limited within 72 hours due to currency transactions or abnormal login. If you want to remove restrictions, please click the following link to validate::
https://forum.guildwars.com/login ( This was trick URL to some site with a *.tk suffix. )
We will come up with certain security protection measure to protect this account.If your account is limited due to our negligence, we will remove the restriction on our end and offer you a mysterious gift in game as compensation for the inconvenience.
The Guild Wars 2 Team