Cybersecurity firm F5's stock sinks 12% after disclosing nation-state hack

Core Viewpoint - F5, a U.S. cybersecurity company, experienced a 12% drop in stock price following the disclosure of a significant system breach attributed to state-backed hackers from China [1][2]. Group 1: Incident Details - The breach was revealed in a Securities and Exchange Commission filing, indicating that the attack affected the BIG-IP product development environment [2]. - The attacker gained access to files containing some source code and information on "undisclosed vulnerabilities" in the BIG-IP product [2]. - F5 became aware of the attack in August but reported no evidence of new unauthorized activity since then [3]. Group 2: Market Reaction - Following the breach disclosure, F5 shares were on track for their worst day since April 27, 2022, when the stock fell by 12.8% [1].