Software from unknown sources always poses some risks. With the strace analysis tool and the Firejail sandbox, you can monitor and isolate unknown applications to safeguard your system.
Attackers can use poorly maintained DNS records to gain access to your IP address. The open source DNS Reaper lets you monitor your records to ward off attacks.
If your school's computer lab consists of Linux machines, Epoptes provides an interesting alternative to conventional management and monitoring programs.