"A mass IT outage has caused travel chaos around the world, with banking and healthcare services also badly hit.
Many flights have been grounded, with queues and delays at airports.
Cyber-security firm Crowdstrike has admitted that the problem was caused by an update to its software, designed to protect Microsoft Windows devices from hacking.
Microsoft has said it is taking "mitigation action" to deal with "the lingering impact" of the outage.
Who is affected?
Airports and air travel were particularly badly hit. Several US airlines - notably United, Delta and American Airlines - grounded their flights around the globe. Australian carriers Virgin Australia and Jetstar also had to delay or cancel flights as departure screens went blank at Sydney airport. Tokyo-Narita and Delhi airports said services had been affected. European airports reported that the outage was causing delays, with long queues reported at London's Stansted and Gatwick and Amsterdam's Schiphol. European airline Ryanair said it was experiencing "potential disruptions across the network", which it said were due to a third-party outage."
German IT experts say that there are several indiccators that it is not a gloabl cyber attack but a software failure following the sun rise of time zones. If this failure was part of an offense is unclear at the moment.
I was close to be affected as well because the card payment system of my book dealer was affected - so in good old German tradition I paid cash.
Good luck to all fellow travelers.