UPDATE: Government agencies and major companies say they never ask for your personal information by phone, email or text. If you receive one of these scams, texts, calls or emails — authorities say to report it.
To report a scam involving FedEx, go to: email@example.com.
To report a scam involving the Internal Revenue Service (IRS), go here.
FedEx is warning customers about a new scam in which people receive text messages or emails with a link to set "delivery preferences" that tries to get them to enter their credit card information.
The company tweeted a statement Wednesday saying it does not send "unsolicited texts or emails requesting money, package or personal information."
"Have you received a suspicious text or e-mail that appears to be from us?" the company wrote. "Suspicious messages should be deleted without being opened and reported to firstname.lastname@example.org."
The messages include a fake "tracking code" with a link to set "delivery preferences" that sends people to a phony Amazon satisfaction survey that asks for a credit card number to claim a free gift, according to HowToGeek.com.
Police in Duxbury, Massachusetts, also warned against the scam on Twitter, telling people not to click on the link and instead go to the FedEx website and search the tracking number if there's any question about it.
One Twitter user posted the fake text message he had received twice, urging people to not click on the link.
The fraud page on FedEx's website also has six tips that help in recognizing online scams, such as unexpected requests for money and personal or financial information.