The FBI has officially accused the North Korean government for the cyber-attack on Sony Pictures Entertainment.

The FBI has officially accused the North Korean government of perpetrating the recent attack on Sony Pictures Entertainment, which could motivate other companies and organizations to review their own security standards.

The cyber-attack could prove to be the most significant in history, involving the leak of employees’ personal data and private communications and causing political and commercial turmoil in the United States. North Korea apparently targeted the business because of “The Interview,” which depicted a comedic assassination attempt on real-life leader Kim Jong Un. Sony canceled the release of the picture following the hack and related threats to American movie goers who saw the film.

“Look at it like a submarine. You have all of these different compartments on a submarine, so if there is a breach, you can seal it off,” security expert Chester Wisniewski said to NBC News. “It sounds like there was no ability to seal it off — instead, it was just one big, open area.”

This may cause other businesses and institutions to take a closer look at their security measures and whether they would be sufficiently able to deter hackers. A breach of this sort has never been dealt with before, since not only sensitive data like Social Security numbers were leaked but also controversial and embarrassing emails.

“This is going to take years to unwrap,” tech officer Bruce Schneier told The Wall Street Journal. “Now every company is thinking, ‘What would it be like if everything in our company was made public?'”

As data breaches become increasingly severe and common, it’s becoming crucial for businesses to guard their computer networks effectively. Retailers, especially, that have access to customers’ payment information through their point of sale systems, need to make security upgrades for the best security possible.