Source code and vulnerability info stolen from F5 Networks

By Howard Solomon for CSO
Thursday, October 16, 2025

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IT and security leaders should install latest patches from the application delivery and security vendor after suspected nation-state hack.

Stolen info could feed future attacks

“Based on the currently disclosed information about the scope of the incident and stolen data, there is no reason to panic,” commented Ilia Kolochenko, CEO of ImmuniWeb, in a statement. “Having said this, stolen source code can greatly simplify vulnerability research by the cybercriminals behind the breach and facilitate detection of 0day vulnerabilities in the affected F5 products, which may be exploited in subsequent APT attacks. Likewise, the reportedly small percentage of customers whose technical information was compromised should urgently assess their risks and continue working with F5 to better understand the impact of the incident.” Read Full Article