Norsk Hydro

In March, Norsk Hydro, one of the world's largest aluminum producers, fell victim to a ransomware attack that brought production to a standstill at some of its 170 plants, forcing others to switch to manual operations. The breach ultimately impacted all 35,000 employees across 40 countries, with the financial toll nearing $71 million. The attack commenced when an employee inadvertently opened a malicious email from a trusted customer. LockerGoga ransomware encrypted files across thousands of the company’s servers and PCs, displaying a ransom note demanding payment in bitcoins for decryption. Norsk Hydro responded by refusing to pay the ransom, collaborating with Microsoft's cybersecurity team to restore operations, and maintaining full transparency about the breach to help others learn from their experience.

Source: https://news.microsoft.com/source/features/digital-transformation/hackers-hit-norsk-hydro-ransomware-company-responded-transparency/

"id": "nor307050724",
"linkid": "norsk-hydro",
"type": "Breach",
"date": "03/2019",
"severity": "100",
"impact": "5",
"explanation": "Attack threatening the organization’s existence"