The networks had been attacked by malicious codes, rather than distributed denial-of-service (DDoS) attacks as initially suspected.

BBC: China IP address link to South Korea cyber-attack

Yes, you can read QR codes, but you have to have the app installed, and there have been cases of people covering over QR codes on posters with malicious codes that direct users to nefarious websites.

WSJ: Is NFC Finally Becoming Mobile's Next Big Thing?

They've worked to teach users to spot and avoid the "phishing" sites that spread malicious software and steal bank codes.

FORBES

One reason that the phishers' tactics are increasingly effective: Instead of directly asking for bank account information in scam e-mails or on Web sites, cybercriminals are using hidden malicious software downloaded to users' desktops that monitors their online activities and records bank codes, Litan says.

FORBES: Future Phishing

Interest in the Android OS as a malicious code writers fave will continue this year, yielding more mobile viruses and new malware codes for users to dodge.

FORBES: Worm Attacks Coming For Google's Android - Kaspersky Lab