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Wi-fi hotspots: Europol warns against 'sensitive' use

People should not access sensitive information - such as their bank accounts - over public wi-fi, Europe's top cybercrime police officer has warned.

Troels Oerting, head of Europol's cybercrime centre, said the warning was motivated by a growing number of attacks at hotspots.

The BBC's technology correspondent Rory Cellan-Jones explains.

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