According to foreign media reports, CNN (CNN) and other well-known websites recently encountered Error 503. According to users, the affected sites include Reddit, The New York Times, CNN, BuzzFeed and other well-known websites, whose network management systems are experiencing major problems.
▲CNN and other well-known websites have encountered Error 503
The user says Error 503: Maximum Threads for service reached will be displayed on the screen.
Fastly, a company that provides cloud services for these sites, said the situation was a “global event” and multiple teams were working to fix and investigate.
Some analysts believe that the accident may be the result of a DDoS (distributed denial of service) attack. Error 503 occurs because the server is overloaded and cannot process new requests.
In addition, a new ransomware virus is sweeping the world, infiltrating many large multinational companies. Companies affected include WPP, Rosneft, Maersk, Merck, the US pharmaceutical company, Evraz, Russia’s second-largest steel company, and DLA Piper, among others. Ukraine has been hit extensively, affecting the state-owned power company Ukrenergo as well as several of the country’s Banks.
The WannaCry virus, which hit more than 200,000 Windows computers in more than 100 countries over a weekend in May, has affected organizations around the world, including French carmakers, Russian Banks and Telefonica operators, and captured the world’s attention. Vital information on Internet users’ computers has been encrypted by a virus that hackers say can only be recovered if a ransom is paid.
Jiangsu Sanai Network Technology Co. LTD
 

Reproduced in: https://my.oschina.net/u/3351259/blog/1116273