There are many possible root causes which could explain what you observed.
> There was (still is) a massive cyberattack against X.
> We get attacked every day, but this was done with a lot of resources. Either a large, coordinated group and/or a country is involved.
> There was (still is) a massive cyberattack against X.
> We get attacked every day, but this was done with a lot of resources. Either a large, coordinated group and/or a country is involved.