What are the causes of Instagram, Facebook and WhatsApp social media outages?

• On the evening of October 4, there was one of the largest disruptions in the work of Facebook services.
• The reason for the failure was DNS records that have disappeared from the global routing tables.
• Social networks Facebook, Instagram and WhatsApp messenger were unavailable for about 6 hours.

Several services on Monday October 4thAmerican corporation Facebook were unavailable around the world. The failure occurred at about 18.30 Moscow time and initially affected Facebook, but later WhatsApp and Instagram owned by the company also "lay down".

Presumably, the cause of the problem lies inDNS records that have disappeared from the global routing tables, that is, in the links missing from the system between the domain name and the IP address of the server on which the site is actually located.

A similar version is confirmed by sourcesmajor media outlets. Brian Krebs, a journalist for the Independent, also said on his Twitter that the error arose due to a planned update of BGP (Dynamic Routing Protocol), and, according to him, the update blocked access for remote users, and therefore only people with physical access, which was also complicated.

“Information from a reliable source:the person involved in the Facebook recovery said the failure was caused by a standard BGP update that went wrong. Due to the update, access to remote users was blocked, and people with physical access did not have network / logical access. "

From trusted source:Person on FB recovery effort said the outage was from a routine BGP update gone wrong. But the update blocked remote users from reverting changes, and people with physical access didn’t have network / logical access. So blocked at both ends from reversing it.

- briankrebs (@briankrebs) October 4, 2021

The situation was slightly aggravated by the fact that employeescompanies were unable to get to their jobs to assess the magnitude of the problem because the badge system also failed. This was reported by the journalist of The New York Times Shira Frenkel on her Twitter.

“I talked on the phone with someone who works inFacebook, and I was told that this morning, employees were unable to get into the office to begin assessing the extent of the outage because their passes did not work and did not open doors. "

Was just on phone with someone who works for FBwho described employees unable to enter buildings this morning to begin to evaluate extent of outage because their badges weren’t working to access doors.

- Sheera Frenkel (@sheeraf) October 4, 2021

As a result, Facebook social networks did not work for about 6 hours, and the situation began to improve only around 01:00 Moscow time. At the moment, all services are working.

Among other things, there was news that onspecial forums sell a huge collection of personal data of Facebook users, which has information about more than 1.5 billion people. Most likely, this is just a coincidence, since the failure was not associated with an attack, and the seller of the collection assures that all the data was collected using parsing (directly from the pages).

The failure of Facebook services caused not onlya wave of discontent of millions of users, he also became the reason for the emergence of many jokes and memes. A significant part of them concerned the position of competitors and ridiculed the problems of FB, while praising Twitter and Telegram.

pic.twitter.com/izFL5t7Vvo

- No Context Humans (@HumansNoContext) October 4, 2021

Against the background of all the problems with Facebook services, the fake account of Mark Zuckerberg wrote that Bitcoin never turned off.

“Hello, it looks like we have a problem with Facebook. We will try to resolve them as quickly as possible. For those who don't know, Bitcoin has never been disconnected. I suggest you use it. "

Hello it appears that we are having issues at Facebook. I'm incredibly sorry I have failed you. We will try to get the platform up as soon as possible.

For those that don’t know #Bitcoin has never been down. I suggest you use it.

- Gus (@gussulliman) October 4, 2021

In fairness, it is worth noting what exactlyin this case, decentralization would not have helped in any way, since the problem did not come from the fact that Facebook's servers are centralized. In any case, decentralized social networks are more reliable because they do not have a single point of failure. Therefore, we recommend having a couple of accounts on decentralized social networks in case your favorite centralized services stop working.

Where is it more profitable to buy cryptocurrency? TOP-5 exchanges

For a safe and convenient purchase of cryptocurrencies with a minimum commission, we have prepared a rating of the most reliable and popular cryptocurrency exchanges that support deposit and withdrawal of funds in rubles, hryvnias, dollars and euros.

Site reliability is primarily determined bytrading volume and number of users. By all key metrics, Binance is the largest cryptocurrency exchange in the world. Binance is also the most popular cryptocurrency exchange in Russia and the CIS, since it has the largest turnover of funds and supports transfers in rubles from bank cards Visa / MasterCard and payment systems QIWI, Advcash, Payeer.

Especially for beginners, we have prepared a detailed guide: How to buy bitcoin on a crypto exchange for rubles?

Rating of cryptocurrency exchanges:

#	Exchange:	Website:	Rating:
1	Binance (Editor's Choice)	https://binance.com	9.7
2	Huobi	https://huobi.com	7.4
3	Exmo	https://exmo.me	6.9
4	OKEx	https://okex.com	6.5
5	Bybit	https://bybit.com	6.3

The criteria by which the rating is set in our rating of crypto-exchanges:

• Work reliability - stability of access to all platform functions, including uninterrupted trading, deposit and withdrawal of funds, as well as the period of work on the market and the daily trading volume.
• Commissions - the size of the commission for trading operations within the site and the withdrawal of assets.
• Additional features and services - futures, options, staking, NFT marketplace.
• Feedback and support - we analyze user reviews and the quality of technical support.
• Convenience of the interface - we evaluate the functionality and intuitiveness of the interface, possible errors and failures when working with the exchange.
• final grade - the average number of points for all indicators, determines the place in the rating.

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