Hola is a VPN provider that purports to offer its users freedom from censorship, a way to access geoblocked content, and anonymous browsing. The service claims that more than 47 million people are part of its peer-to-peer network. But according to a group of researchers (calling themselves Adios), it's dangerously insecure: the client software has flaws that allow for remote code execution and features of the client enabled tracking.
On top of that, critically, Hola sells access to its peer-to-peer network with little oversight, enabling it to be used maliciously. The nature and scale of problems with Hola has researchers now saying users should bid adieu to the software.
