I’m not one to bash Microsoft, but come on…
It seems that Microsoft, in their monopolist wisdom, elected to use only XOR “encryption” on their wireless keyboards and mice. For non-technical readers, this means that anyone eavesdropping on the signals sent from the keyboard to the computer could read everything the user was typing in…. hmmm…. about a minute.
The affected keyboards are essentially hardware keyloggers, spewing out your keystrokes to all and sundry. Who in their right mind thought that would be a good idea? Somebody obviously realised that it was important to encrypt this data before broadcasting it to the world. Clearly, a brainfart must have enveloped their thinking, since they stopped short of actually encrypting anything and instead implemented something resembling an undergraduate programming project.
Morons.