Verisign was hacked last year. You’ve probably never heard of them.
Verisign, Inc. is an American company based in Reston, Virginia that operates a diverse array of network infrastructure, including two of the Internet’s thirteen root nameservers, the authoritative registry for the .com, .net, and .name generic top-level domains and the .cc and .tv country-code top-level domains, and the back-end systems for the .jobs, and .edu top-level domains. (Wikipedia)
In other words, Verisign is a big piece of the backbone that makes the internet actually work. When type in yourbank.com, you’re pretty much trusting Verisign to send your browser to the servers that your bank actually owns and controls. That’s just one small aspect of their operations. And now it’s been hacked and no one knows exactly what the attackers did or stole.
This kind of thing is happening all the time. Because the entities involved, like Verisign, do not advertise in malls or YouTube ads, most people don’t even know how, let alone whether, to care about incidents like this.
The point of all this is not to alarm anyone. I guess I’m just saying that people should be aware how thoroughly unreliable the internet really is.