Comment by compel2160

The idea isn't to comprehensively make malicious code impossible - the idea is to make it difficult to sneak in. If the NSA wants to spend 500 billion$ to compromise an NPM package, there's very little we can do. But if waiting 3 days for security scans catch even 10% of malicious packages, that 's 10% fewer incidents everyone else has to deal with. And now people pwning maintainers must be much more sophisticated so their attacks are entirely undetected for that period.