Companies and consumers are using Wi-Fi networks more than ever, although security measures aren't always keeping pace, according to a new study from security firm RSA.

The seventh-annual Wireless Security Survey showed "dramatic" growth of wireless networks in New York, London and Paris.

And at a time when concern over data security is at an all-time high -- especially as the implications of high-profile breaches like TJX's are still being felt -- the study found that enterprises and home-based networks are incorporating better Wi-Fi security standards than they were in the past. There's still much room for improvement, however, RSA said.

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