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Sony plan to foil PlayStation-type attacks no match for hackers

Defensive steps that companies take after an intrusion typically have a short shelf life, say experts

The most recent attacks suggest that Sony hasn't done enough in terms of passwords and encryption since the 2011 breach.


BACK in 2011, Sony Corp spent heavily to upgrade its computer systems and fix all known security holes following a cyber attack that took down its PlayStation Network. That protection fell short when the company's film division was assailed three years later.


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