Microsoft has warned busy holiday shoppers to watch out for a new phishing campaign that uses fake credit card reports to infect devices with the deadly Cerber ransomware. The email urges users to follow the instructions in the attached Word document that includes step-by-step instructions to allow an attached macro downloader that. The researchers note that the fraudulent emails are fraught with errors and inconsistencies that users can look out for to avoid falling for such scams. For instance, legitimate notification emails from MasterCard and other credit card companies will not ask users to enable macros, Microsoft notes. In the email, the local name of the victim's email address is used to personalise the email that could alert a careful user about a possible phishing attempt. These scam emails are also sent from an email address that is not related to the credit card company or bank.