-- As the holidays approach and many people turn to online shopping to buy gifts, experts warn against falling for scam emails -- disguised as delivery notices -- that often spike in popularity at this time of year.
"These emails ask the receiver to open an attachment in order to obtain the airbill or invoice needed to pick up their package," the shipping giant FedEx wrote on its website. "The attachment in the email may contain a virus. Please do not open the attachment and delete the email immediately.
"The frequency of this email tends to increase close to the holiday season, presumably to exploit the growth in shipping volumes," FedEx added.
"Con artists often use the names and logos of familiar organizations to get under your guard," the FTC warned.
"These can have attachments or links to sites that will download malware on your computer to steal your identity and your passwords," the BBB wrote on its website. "Don’t be fooled by a holiday phishing scam."
"Please do not open the attachment. This email and attachment does not originate from DHL," the group added.
UPS also issued an advisory to its consumers, including a list of example scam emails, so that people can see what they look like.
The FTC said the best way to spot a phony email is to see if the email asks you to click on a link or download an attachment. Another red flag to look for is whether the email "urges you to take immediate action," according to the FTC. Lastly, if an email ever asks you to "'re-confirm' personal or financial information," it is likely not legitimate.
The FTC added that a "sure sign an email is a scam" is if you hover your mouse over a link in an email and it doesn't show the official website of the supposed sender.