@Dr Syntax - It always helps to read the article to the very end:
'...Crucially, a fix is promised to reverse the damage. According to Flaxman:
As a remedy for the small number of affected customers, we will issue an optional firmware update that will remove the dynamic security feature. We expect the update to be ready within two weeks and will provide details here.
Alternatively, you can vent your anger at print-hpi@hp.com. ®'