As the saying goes, what’s old is new again, but sometimes what’s new can still be new again. Enigmatic? Perhaps, but two programs in the ransomware category are doing their best to prove this. An old friend that I’ve written about several times now, CryptoWall, is pioneering a new infection vector, while a fresh challenger, TeslaCrypt, is seeking to carve out a new target niche that has been underexploited. Let’s see why security experts are concerned about these two infectious agents.