Sometimes, though, the hacks hit harder than usual. That was the case in St. Paul, Minnesota, which suffered a significant cyberattack last Friday that it has been unable to mitigate. Things have gotten so bad that the city has declared a state of emergency, while the governor activated the National Guard to assist.

Local, state and federal agencies are investigating a cyberattack against the City of St. Paul that caused the city to shut down its information systems.

Minnesota has called in the National Guard after the city of St. Paul was slammed by what its mayor described as a "deliberate, coordinated, digital attack" carried out by sophisticated hackers.