Dutch newspaper De Volkskrant, which revealed this new information last week, said the compromise of the Dutch national police’s computer systems was not detected by Dutch police themselves, but by the Dutch General Intelligence and Security Service (AIVD). The paper said that neither the police nor the AIVD were willing to confirm the breach, but added that it had confirmed the breach took place through multiple anonymous sources.

On July 5, 2017, the Netherlands, Ukraine, Belgium, Australia and Malaysia announced the establishment of the Joint Investigation Team (JIT) into the downing of flight MH-17. The multinational group stipulated that possible suspects of the downing of flight MH17 would be tried in the Netherlands. In September 2017, the AIVD said it possessed information about Russian targets in the Netherlands, which included an IP address of a police academy system. That system turned out to have been compromised, which allowed the attackers to access police systems. According to four anonymous sources, evidence of the attack was detected in several different places.

The police academy is part of the Dutch national police, and non-academy police personnel can access the network using their log-in credentials. Some sources suggest that the Russian Foreign Intelligence Service (SVR) carried out the attack through a Russian hacker group known as APT29, or Cozy Bear. However, a growing number of sources claim the attack was perpetrated by the Main Directorate of the Russian Armed Forces’ General Staff, known commonly as GRU, through a hacker group known as APT28, or Fancy Bear. SVR attackers are often involved in prolonged espionage operations and are careful to stay below the radar, whereas the GRU is believed to be more heavy-handed and faster. The SVR is believed to be partly responsible for the compromise of United States government agencies and companies through the supply chain attack known as the SolarWinds cyber attack, which came to light in late 2020.

Russia has tried to sabotage and undermine investigation activities into the MH17 disaster through various means: influence campaigns on social media, hacking of the Dutch Safety Board, theft of data from Dutch investigators, manipulation of other countries involved in the investigation, and the use of military spies. The Dutch police and public prosecution service were repeatedly targeted by phishing emails, police computer systems were subjected to direct attacks, and a Russian hacker drove a car with hacking equipment near the public prosecution office in Rotterdam.

The above efforts are not believed to have been successful. But the attack that came to light in September 2017 may have been. The infected police academy system ran “exotic” (meaning uncommon) software, according to a well-informed source. The Russians reportedly exploited a zero day vulnerability in that software. After the incident, the national police made improvements in their logging and monitoring capabilities, and in their Security Operations Center (SOC). It is not currently known how long the attackers had access to the national police system, nor what information they were able to obtain.