Adversaries have once again demonstrated that operational hours are irrelevant when mounting sophisticated cyberattacks.

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Adversaries have once again demonstrated that operational hours are irrelevant when mounting sophisticated cyberattacks.

Chaosbot CiscoVPN Attack - In late September 2025, eSentire’s Threat Response Unit (TRU) uncovered a sophisticated Rust-based backdoor

My colleague installed Linux (Ubuntu) OpenVPN server for remote work from home and remote devices from the domain network. In the domain we have such subnets as 192.168.(0/1/3/4/6/11/24).0 . The connection between the networks is via CiscoVPN (each network is a different work office). I would like to note: subnet 6 has a mask of 23, and all the others 24. When connecting to OpenVPN from a home computer, it is possible to ping all subnets and devices, with the exception of 6. In turn, from the OpenVPN server itself, ping to absolutely all subnets is available. What could be the problem? I don’t know how the routes (if there is a ping from the server) can affect and how to configure them differently.

My colleague installed Linux (Ubuntu) OpenVPN server for remote work from home and remote devices from the domain network. In the domain we have such subnets as 192.168.(0/1/3/4/6/11/24).0 . The connection between the networks is via CiscoVPN (each network is a different work office). I would like to note: subnet 6 has a mask of 23, and all the others 24. When connecting to OpenVPN from a home computer, it is possible to ping all subnets and devices, with the exception of 6. In turn, from the OpenVPN server itself, ping to absolutely all subnets is available. What could be the problem? I don’t know how the routes (if there is a ping from the server) can affect and how to configure them differently.

ChaosBot surfaced in late September 2025 as a sophisticated Rust-based backdoor targeting enterprise networks. Initial investigations revealed that threat actors gained entry by exploiting compromised CiscoVPN credentials coupled with over-privileged Active Directory service accounts. Once inside, ChaosBot was stealthily deployed via side-loading techniques using the legitimate Microsoft Edge component identity_helper.exe from the C:UsersPublicLibraries directory. The […]