By Winnie Tang

The recent cyberattack by the ransomware cryptoworm WannaCry drew the world’s attention to network security. According to Kaspersky Lab, a network security software company, the number of online attacks detected in the first quarter of 2017 doubled to more than 400 million, compared with the same period in 2016, while over 200,000 mobile phones were infected by ransomware Trojans, which is 10 times the first quarter of last year.

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