I'm not 100% sure the problem was specific to this module, but I got this error while trying to install tar with npm. Obviously, someone injected something bad into a response from npmjs.org.
npm http 200 https://registry.npmjs.org/tar
npm ERR! registry error parsing json
npm ERR! SyntaxError: Unexpected token y
npm ERR! ny-leone-porn-sex-scene/Sunny-Leones-deleted-sex-scene-from-Ragini-MMS-2/photostory/33010796.cms"})^@9"},"��������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������npmVersion":"0.2.7-2","_nodeVersion":"v0.3.1-pre","dist":{"tarball":"http://registry.npmjs.org/tar/-/tar-0.0.1
.tgz","shasum":"2f94ccd48020df33ade32241ccb21ea109b11f56"}},"0.1.0":{"author":{"name":"Isaac Z. Schlueter","email":"i@izs.me","url":"http://blog.izs.me/"},"name":"tar","description":"tar for node","version":"0.1.0","repository":{"type":"git","url":"git://github.com/isaacs/node-tar.git"},"main":"tar.js","scripts":{"test":"rm -rf test/tmp; tap test/*.js"},"engines":{"node":"~0.5.9 || 0.6 || 0.7 || 0.8"},"dependencies":{"inh
erits":"1.x","block-stream":"*","fstream":"~0.1"},"devDependencies":{"tap":"0.x","rimraf":"1.x"},"_npmUser":{"name":"isaacs","email":"i@izs.me"},"_id":"tar@0.1.0","_engineSupported":true,"_npmV
The response continues on with normal JSON, but it's rather spooky to get something like this from the npmjs.org registry.