A cyberattack is an offensive attempt, often by an anonymous individual or group, to steal, alter, or destroy a target's information. Cyberattacks are also used to damage or destroy a computer device, network, or system.

North Korea’s Sony hack statement is a work of unintentional poetry
Because I could not stop for hack, he kindly stopped for me.
Tor network anticipates attack in coming days
Bad news for online privacy.
Sony CEO Michael Lynton wants you to see ‘The Interview’
"If the president wants to see the movie I would be more than delighted to send it to him."
Sen. John McCain will investigate the Sony hack
Congress is on the case.
FBI says it hasn’t found a link between North Korea and Sony hack
This won't stop people guessing, however.
FBI warns U.S. companies that more hacks like Sony’s could be coming
Amazingly, it may all be James Franco's fault.
Major cyberattack coming by 2025, experts say
They predict such a massive attack that no one will be safe from harm.
Hackers hit CurrentC, Apple Pay’s main competitor
This isn't a good sign, except maybe for Apple.
American hospital reveals it was hacked by Chinese earlier this year
Personal information was comprised, though payment and medical details were not accessed. 
How an FBI informant orchestrated the Stratfor hack
Previously unseen chat logs reveal that Hector “Sabu” Monsegur—not Jeremy Hammond—instigated the infamous cyberattack. 
U.S. government hit by up to 200 cyberattacks every day
Don't worry, they have a system to handle it.