1. A method comprising: receiving, by a computer, a first compiled computer binary; generating, by the computer, a first fingerprint of a first function of the first compiled computer binary by generating a block rank score for each block in the first function; generating a path of blocks of the first function based on the block rank score of each block; generating the first fingerprint using the generated path of blocks of the first function; receiving, by the computer, a second compiled computer binary; generating, by the computer, a second fingerprint of a second function of the second compiled computer binary by generating a block rank score for each block in the second function; generating a path of blocks of the second function based on the block rank score of each block; generating the second fingerprint using the generated path of blocks of the second function; comparing, by the computer, the first fingerprint of the first function with the second fingerprint of the second function; and determining, by the computer, whether the second function includes at least some of code from the first function based on the comparison, wherein the generation of a block rank score for each block in the first and second functions involves reversing all edges in a control flow graph for the first and second functions and assigning a block rank score to each block based on block rank scores of blocks having a forward path to the each block.