These types of "unsolicited file" messages often use urgent or intriguing language to trick users into compromising their personal information.
Security experts and organizations like the advise the following actions:
: The safest course of action is to simply delete the message without replying.
If you received a text message containing "," it is highly likely part of a viral text messaging scam .
: Use your phone's built-in features to block the sender's number and report the message as spam to your carrier.