Grubhub email scam promises 10x Bitcoin returns; messages sent since December 24

Since December 24, Grubhub users have received fraudulent emails from the b.grubhub.com subdomain promising to 10x any Bitcoin sent to a listed wallet. A Grubhub spokesperson called the issue isolated and under investigation, while the FBI recently warned of heightened holiday scams, including non-delivery and non-payment schemes.