TrueConf Server Flaws Exploited to Replace Client Installers with PhantomCore
The threat actor known as Head Mare has been observed weaponizing security flaws in unpatched TrueConf servers once again in attacks targeting Russian companies spanning instrumentation, electronics, transport, energy, IT, and software development sectors. Russian cybersecurity vendor Kaspersky said it detected the attacks in July 2026. The activity involves exploiting a vulnerability chain
We haven't written up this one. The Hacker News has the full story — the link below goes straight to it.
