Russian hackers broke into servers belonging to Dow Jones, the owner of the Wall Street Journal and several other news publications, Bloomberg reports.

The target? Information they could use to get a leg up on investing, according to anonymous people familiar with the investigation, Bloomberg says.

These types of incidents highlight one reason news organizations are such a juicy target for hackers: They are filled with journalists constantly trying to scrape together as much information as possible -- and information is power.

Or, potentially, money.

"Information embargoed by companies and the government for release at a later time could be valuable to traders looking to gain an edge over other market participants, as could stories being prepared on topics like mergers and acquisitions that move stock prices," Bloomberg explained.

Other high-profile newsroom breaches have also been linked to a quest for knowledge, albeit with less obvious financial motivation. Chinese hackers were suspected of being behind cyberattacks that infiltrated Washington Post systems in recent years -- as well as breaches at the New York Times and the Wall Street Journal.

In those cases, it is widely believed the attackers were looking to gain insight into the outlets' coverage of China and other sensitive reporting topics.