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:

https://techcrunch.com/2025/10/15/cyber-giant-f5-networks-says-government-hackers-had-long-term-access-to-its-systems-stole-code-and-customer-data/

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.

TechCrunch