No

A cyber attack is a cyber operation, whether offensive or defensive, that is reasonably expected to cause injury or death to persons or damage or destruction to objects.

Michael Schmitt et al; Tallinn Manual 1.0, pp 92
  • Cyber Operation?
  • Expected to cause death or injury to people or objects?
GRU-linked Groups Intrusion Into Swedish Sports Confederation does not match this definition. Here's a list of actual cyberattacks and and why this matters.

What happened?

Swedish officials disclosed that the Swedish Sports Confederation was hacked by Russian military intelligence in late 2017 and early 2018 in response to accusations of Russian government-sponsored doping of Russian athletes