A retired lawyer lost the money in a tech support scam, a type of online fraud that is surging. Citibank said it couldn’t recover the funds, which criminals wired from inside his account. David Welles ...

Michael Cotter had a problem: “Chargebacks” at his tech support company were too high. The reason for this was not hard to find; people at his company, Tech Live Connect, were scamming Cotter’s fellow ...