They'd be visible, if it was noticed. Bugs get introduced to OSS all the time just because sometimes it's hard to review code 100% accurately. Replace bugs with

They'd be visible, if it was noticed. Bugs get introduced to OSS all the time just because sometimes it's hard to review code 100% accurately. Replace bugs with truly malicious code and the same applies. If you told me I use OSS on a daily basis that has some sort of malicious code that slipped though the cracks, I'd believe it just due to the shear amount of code running on any machine.