All of these hugely popular sites have suffered significant hacks in recent years, exposing hundreds of millions of innocent users' details to criminals.
In light of these attacks, it has specifically highlighted the real threat facing companies, even those that live and breathe tech.
Speaking at the inaugural WIRED Security event in London, Sadie Creese, head of cyber security at the University of Oxford, explained how businesses and their employees can become resilient to such insider threats.
For longer than we know, people have been trying to hack into our systems, Creese told the audience.
Over the years, we ve invested resources and money to ensure it s hard for people to break into our systems - but the problem is that you could be hacked by someone from the inside, with valid access to some part of your system that gives you access to your digital infrastructure.
I now no longer have to hack 50 organisations, I hack one cloud and I get every single employee using that cloud.