The President of the US mentioned (and thus confirmed) the incident in which the security of the servers used in his electoral campaign was breached, while also providing an alphabet soup of who was involved in post-incident activities: And we worked closely with the CIA with the FBI and the Secret Service and hired security consultants to restore security of our systemss systems. The remark seems to provide third-party confirmation of the fact that the DoS attacks against Georgian official websites during the recent war were indeed Russia’s doing and thus the first act of overt cyber-warfare ever.”]
Source: https://www.bitdefender.com/blog/hotforsecurity/obama-ushers-in-the-age-of-cyberwarfare/