The Daily Beast later determined that the extension was infected with malware.

The hijacked devices had been infected with malware, Dyn said, according to the report.

Improved computer security would also help, since many illicit messages are sent from computers infected with malware.

Devices can be infected with malware.

In January, Microsoft listed it behind only Mongolia of countries infected with malware, with more than double the worldwide average.

First it was the FaceApp security breach scare, followed by several Android apps on the Google Play store infected with malware.

That's not even mentioning the huge selection of pirated software available on file sharing networks that could easily be infected with malware.

QuantumInsert A "man-in-the-middle" technique used to redirect a target's computer to a fake website where it can be infected with malware.

The one-time passcode would be used instead of the person's normal password at, for example, a public computer that might be infected with malware.

Hung said TPBank was hit because a third-party vendor it had used to connect to the SWIFT money transfer system was likely infected with malware.

The government says it needs this power to investigate a network of devices infected with malware and controlled by a criminal-what'sknown as a "botnet."