“South Korea has installed digital ‘bunkers’ to prevent a repeat of the massive distributed denial-of-service (DDoS) attacks that crippled parts of the country last year.

The nation was floored after huge streams of junk Internet data poured across its networks last year, targeting the infrastructure of government and businesses. ‘We were caught off-guard,’ Jinhyun Cho of the Korea Computer Emergency Response Team (KrCERT) told ZDNet Australia. “The whole country knows what a DDoS attack is.’ ”