The United States is the juiciest target for hackers hunting credit card information. And experts say incidents like the data theft at Target’s stores will get worse before they get better.
That’s in part because US credit and debit cards rely on an easy-to-copy magnetic strip that stores account information using the same technology as cassette tapes.
‘‘We are using 20th-century cards against 21st-century hackers,’’ said Mallory Duncan, at the National Retail Federation. ‘‘The thieves have moved on but the cards have not.’’
In most countries outside the United States, people carry cards that use digital chips to hold account information. The chip generates a unique code every time it is used. That makes the cards more difficult for criminals to replicate. Full story for BostonGlobe.com subscribers.