The evolution of fileless attacks may soon take an insidious turn with the development of what some researchers are calling vaporworms. The only vaporworms that have been detected so far in the wild propagate by installing copies of themselves on removable storage devices, such as flash drives and external disk drives. Once malware acquires the ability to infiltrate network shares, it can spread at exponential speed. There is no evidence that any fileless variants use networks to replicate, but the possibility should have enterprise security teams on high alert.”]