Fundamental questions, like how the SolarWinds hackers got into its systems from the start, still aren't answered.

Kroger is only the latest firm to be swept up in a breach that began at Accellion, a software provider.

The idea might not be to shut the cybercrime operations down entirely, but to make their lives very difficult.

The company operates in cyberspace in much the same fashion that nation-states do.

The company said it saw no indications that its systems were used to attack others.

The action highlights the power that tech companies have to throw up road blocks to well-resourced hackers.