A rare emergency directive was issued by the U.S. Cybersecurity and Infrastructure Security Agency on Wednesday after the reported theft of the code of a widely used security system last month by a "highly sophisticated nation-state actor."

The theft exposes multiple critical government online services and places personal data at risk.

What is F5, and what does this impact?

What we know:

F5, Inc. says a nation-state cyberattack gave hackers long-term access to parts of its internal systems, including those tied to its BIG-IP product development and engineering platforms.

The Seattle-based company said it has contained the breach and has not seen any new unauthorized activity since taking response actions. Investigators found that some files were stolen, including portions of BIG-IP s

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