Zimperium is a privately owned company headquartered in the US. Founded in 2010, the company has approximately 240 employees. It specializes in computer and network security, offering mobile device and application security against threats.
On February 19, 2026, Zimperium released an advisory concerning Keenadu, a newly identified Android firmware backdoor. The security company noted that Keenadu operates at a deeply embedded level within device software, bypassing conventional mobile security measures and exposing organizations to heightened risks of persistent compromise. This follows earlier action on the same day when Zimperium provided zero-day coverage of Keenadu, which Securelist uncovered as an advanced, deeply embedded threat that goes beyond traditional app-based malware. Unlike ordinary malicious applications, Keenadu installs itself during the device firmware build process, embedding into a core shared library that loads into the Android runtime and then injects into the Zygote process, the parent process responsible for launching all Android applications.
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