It's also incredibly insecure. One uses it to run a different OS on the same computer, not really for isolating it from the host OS/other VMs.
Just look at the kinds of vulnerabilities regularly found in it. They're mostly run-of-the-mill buffer overflows or missing range checks in emulation. Simple stuff that should have been caught if they were serious about security.
Compare that to xen or kvm, which have of course also had vulnerabilities, but you can see people usually have to get a lot more creative when attacking those.
If you wouldn't run a program on your actual machine, you probably should not run it in a VirtualBox VM either.
Just look at the kinds of vulnerabilities regularly found in it. They're mostly run-of-the-mill buffer overflows or missing range checks in emulation. Simple stuff that should have been caught if they were serious about security.
Compare that to xen or kvm, which have of course also had vulnerabilities, but you can see people usually have to get a lot more creative when attacking those.
If you wouldn't run a program on your actual machine, you probably should not run it in a VirtualBox VM either.