Be careful out there, to not run into phishing scams, possible malware, hijacking or whatever else malicious may be out there.
Steam users are currently attempted to be tricked into a Light No Fire beta invitation.
Do not respond or click or anything else, but do REPORT it if you run into this.
Multiple topics on the subject, just a few examples:
If you came across this and may have clicked a link, filled in information, downloaded something, or otherwise feel you may have been tricked, make sure to secure your account(s) involved!