Back when Nokia phones were running Symbian OS, one of the best operating systems in the world at the time it caught a lot of unwanted attention due to the immense popularity of the OS. Nokia got this attention from code-snatching thieves.
In 2007, Nokia paid a few millions to a few ransomers who were going to release Symbian’s encryption passkey to the public, allowing everyone access to Nokia’s baby. The OS could have been been compromised and attacked by viruses. Nokia called the cops to set up a plan of them calling the ransomers to pick up money, and then getting them arrested. Sadly, something went wrong and the Police lost the suspects with the company’s money and encryption key.
Now that Symbian is not much in demand that key is pretty much useless, but it’s still out there. Those criminals till date, are in the wild.