Agent Countercheck v0.5.3

• Fix: on macOS and Linux, processes a check leaves running in the background are stopped when the check ends.
  A check that started a server or sleep 300 & and exited could pass while that process kept running (and kept
  its port open) after verify finished, beyond the check's timeout. Each check already ran in its own process
  group, but the group was only killed on timeout; now it is killed after every check, as Windows already did with
  its Job Object. Reported by Perch Scan. A process that deliberately leaves the group (setsid) can still escape
  on Unix; the macOS sandbox and a container remain the way to contain a hostile check.

Install

You use	Command
Python	pip install -U agent-countercheck · uvx --from agent-countercheck countercheck verify
macOS / Linux, Homebrew	brew trust --formula datacrate360/tap/agent-countercheck && brew upgrade agent-countercheck
macOS / Linux, any shell	curl -fsSL https://raw.githubusercontent.com/datacrate360/agent-countercheck/PROD/install.sh | sh
Windows 10/11, PowerShell	irm https://raw.githubusercontent.com/datacrate360/agent-countercheck/PROD/install.ps1 | iex