[I don’t believe any of the official excuses..
I think they were hacked by someone, IMO many of the cyber attacks are done by an insider within a company...]
All of these offensive capabilities take a while to put together. Private hackers use them to make money, so they do things related to monetization that inevitably lead to discovery. State actors save them for a rainy day.
I spent the majority of my IT career working on Cisco Routers and Switches, plus Cisco Voice..
During that time I was contracted to some really large companies, two had worldwide computer networks, where the group I worked on rolled out literally thousands of Routers/switches and IP phones.....
I’m quite familiar with the change control process having written many of them myself.....
Part of my team rolled out Cisco IP Phones for a couple of the major trading companies on the NYSE and on the floor of the exchange, based on all that I’m highly, highly suspicious of a worldwide network going down.....
I’ve seen individual buildings with hundreds of employees go offline, I’ve seen parts of a entire country go offline, but I never saw an entire distributed network with worldwide reach go offline....