This one's a wild/messy one: Cyber giant F5, which serves most of the Fortune 500, said unknown government hackers had 'long term' access to its network:
• stole source code, some customer data
• accessed undisclosed vulns in BIG-IP
• DOJ allowed F5 to delay public notice citing national security
More, from me:
Cyber giant F5 Networks says government hackers had 'long-term' access to its systems, stole code and customer data | TechCrunch
The company, which provides cybersecurity defenses to most of the Fortune 500, said the DOJ allowed it to delay notifying the public on national security grounds.