newsukraine.rbc.ua - Cyber specialists from Ukraine's Defense Intelligence (HUR) have carried out a large-scale special operation targeting the occupation authorities in Crimea.

According to a Ukrainian intelligence source speaking to RBC-Ukraine, the operation lasted several days.

A powerful DDoS attack effectively paralyzed the information systems and network infrastructure in Crimea.

While the Russian occupiers were scrambling to identify the cause of the government systems' failure, HUR cyber experts infiltrated the electronic accounts of the leadership of the occupation administration in temporarily occupied Crimea. They gained access to the following digital resources:

• electronic document management system DIALOG,
• systems SED and Delo,
• accounting platforms 1C:Document Flow, Directum, and ATLAS.
  Over two days, 100 terabytes of documents belonging to the occupation authorities of the peninsula were downloaded.