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My husband got an email that he thought was from an old friend requesting his phone number. Without thinking, he sent our address and phone number to this person, whom we were able to later confirm was a fake. We tried to unsend the email but were unsuccessful. What steps should we now take? — Ann B.
Addresses and many phone numbers are readily available public information, so rest assured you probably haven’t given away any secrets.
But you have confirmed that your phone number and address are current, so you can expect more junk texts and phone calls in your future. Impostors posing as old friends are sadly common.
Crooks may be armed with bits of personal information that they possess through a data breach. Before unsuspecting victims finally catch on, a scammer may trick them into sharing additional details to fuel a phishing, smishing or other scam.
Connecting seemingly unrelated pieces of information is the goal. Indeed, the longer a text exchange, the better the chance a criminal can gain your trust and collect those details, which can be used to steal your money or identity.
These days, advances in artificial intelligence can make detecting fakes of all types even harder.

Ask The Tech Guru
AARP writer Ed Baig will answer your most pressing technology questions every Tuesday. Baig previously worked for USA Today, BusinessWeek, U.S. News & World Report and Fortune, and is author of Macs for Dummies and coauthor of iPhone for Dummies and iPad for Dummies.
4 ways to identify a possible impostor
1. Casual coffee. Criminals will do anything to attract your attention, including something as seemingly innocuous as inviting an old buddy to catch up over a cup of joe, according to the Federal Trade Commission (FTC).
“Don’t perk up just yet,” the FTC’s Terri Miller, a consumer educational specialist, warns on the agency’s website. “That invitation for a coffee date might sound like it’s from a friend you’ve lost touch with, but it’s probably just a scammer looking to start a conversation with you.”
That’s also why you shouldn’t tell texters they’ve reached a wrong number. You’re confirming yours is a legitimate phone number, which makes it a target for ongoing spam and scam attacks.
Related: How to Get a Cheap or Free Phone Number for Calls, Texts
2. Unrecognizable number. A text from a friend with an unfamiliar phone number is not a foolproof indicator of fraud, but it should give you pause. If you haven’t been in touch with your real pal in a long time, you might not know a current number.
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