Authored by "Dr. R P" via DailySceptic.org,

The perils of over-reliance on digital systems have been once again highlighted by the crashing of computer systems around the world due to an update to the Falcon antivirus and security product from CrowdStrike affecting its interaction with Windows operating systems. The update has caused chaos for banking, retail, railways, airports, healthcare and for a wide range of other businesses and infrastructure where the Falcon software runs on Windows systems. Advice for bringing affected computers back into working order has been published but the exact mechanism by which the update caused "Blue Screen of Death" errors does not appear to have yet been reported.

It appears that in many cases, whilst the update was distributed automatically over the internet to systems, the workaround to fix the problem requires the machines to be rebooted in Windows' safe mode, which usually requires physical access. The person at the keyboard then needs to know the password for the computer's administrator account, and use this level of access to delete a file within a subdirectory of Windows' System32. This process can be more complicated where Microsoft's BitLocker encryption is in use. In many organisations the recovery keys for BitLocker have themselves been stored on a computer unable to start properly due to the CrowdStrike update. The quote "Men go mad in herds, while they only recover their senses slowly, one by one", originally from Charles Mackay in 1841, seems applicable now to computers too. They crash en masse, then require individual attention before they will work again.