Cian outage follows drone attack that halted Yandex data centre in Sasovo
In short
Online property platform Cian (Циан) reported an outage of its website and app on 8 October, citing an incident at a facility of an unnamed infrastructure partner. The same day Yandex said a drone attack caused a fire at its data centre in Sasovo, Ryazan region, and that the centre's operation had been fully stopped. Kommersant and Vedomosti reported Cian's outage as following the drone attack.
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Online property platform Cian (Циан) reported an outage of its website and mobile app on 8 October, which it attributed to an incident at a facility of an infrastructure partner. "We are recording a failure in the operation of the Cian website and app due to an incident at an infrastructure partner's facility. Our technical team is making every effort to quickly restore full operation of the platform," the company said on Thursday on social media, Interfax reported. RBC reported that users had problems accessing the service's site and app. [ 1 , 4 , 5 ]
Cian did not disclose the name of the partner, according to Interfax. Kommersant's headline said Cian reported the outage after the attack on the Yandex data centre, while Vedomosti's headline tied it to a drone attack on a data centre in Ryazan and its article went on to describe the fire at the Yandex data centre in Sasovo. RBC's headline said Cian warned of disruptions after damage to a data centre. [ 1 , 3 , 4 , 5 ]
In the morning, Yandex's press service said a fire broke out at its data centre in Sasovo, Ryazan region, as a result of a drone attack, affecting part of the infrastructure. "No one was hurt, the relevant services are on site dealing with the consequences. The data centre's operation has been fully stopped, and part of Yandex's services may be unavailable to users," the press service said, as quoted by Interfax. Kommersant reported that the attack took place overnight and that the company told it the facility's work had been completely halted. [ 3 , 4 , 5 ]
Ryazan region governor Pavel Malkov (Павел Малков) said two drones were shot down over the region overnight, Vedomosti reported. Kommersant reported that Yandex shares fell more than 3% on the Moscow Exchange. [ 3 , 4 ]
Why it matters
Yandex said the data centre's operation was fully stopped and that some Yandex services may be unavailable to users, while Cian's site and app failed the same day. Kommersant reported that Yandex shares fell more than 3% on the Moscow Exchange.
Key facts
- Cian reported a failure of its website and mobile app, citing an incident at an infrastructure partner's facility. [ 4 , 5 ]
- Cian did not disclose the name of the infrastructure partner. [ 5 ]
- A drone attack caused a fire at Yandex's data centre in Sasovo, Ryazan region, affecting part of its infrastructure. [ 3 , 4 , 5 ]
- Operation of the data centre was fully stopped, and part of Yandex's services may be unavailable to users. [ 3 , 5 ]
- No one was hurt, according to Yandex. [ 4 , 5 ]
- Ryazan region governor Pavel Malkov (Павел Малков) said two drones were shot down over the region overnight. [ 4 ]
- Yandex shares fell more than 3% on the Moscow Exchange. [ 3 ]
Confirmed by several sources
- Cian's website and app suffered an outage on 8 October. [ 1 , 4 , 5 ]
- A fire broke out at Yandex's data centre in Sasovo, Ryazan region, after a drone attack. [ 3 , 4 , 5 ]
- The data centre's operation was fully stopped. [ 3 , 4 , 5 ]
- There were no casualties. [ 4 , 5 ]
- Part of Yandex's services may be unavailable to users. [ 3 , 5 ]
Still unclear
- Whether the Yandex data centre is the infrastructure partner facility behind Cian's outage. Cian did not name the partner; Kommersant's headline linked the outage to the attack on the Yandex data centre, and Vedomosti's to a drone attack on a data centre in Ryazan.
- When Cian's site and app and the affected Yandex services will be fully restored. Cian said its team was working to restore the platform quickly but gave no timeframe; no document says when the data centre will resume work.
- Two drones were shot down over Ryazan region overnight. Reported only by Vedomosti, citing the governor.
- Yandex shares fell more than 3% on the Moscow Exchange. Reported only by Kommersant.
What local media are saying
Timeline, local time
- RBC reports Cian warned of disruptions after damage to a data centre, with users having problems accessing its site and app. [ 1 ]
- Kommersant reports the overnight drone attack and fire at the Yandex data centre in Sasovo, the full halt of its operation and a fall of more than 3% in Yandex shares. [ 3 ]
- Vedomosti reports Cian's statement on the outage and the governor's account of two drones shot down over the region. [ 4 ]
- Interfax reports Cian's statement and the Yandex press service's account of the fire, noting Cian did not name its partner. [ 5 ]