Package managers have an integrity problem
I tested 25 of the most popular package managers to check whether they detect a compromised package repository injecting malicious code into legitimate packages. This code integrity problem could be solved using cryptographic hashes or signatures, but many package managers are still vulnerable to this threat. Of the 25 package managers reviewed1, fewer than half used lockfiles that checked for tampering by default, and only two verified the integrity of every package they downloaded. Supply-cha…