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Why Are so Many Websites Down and when Will They Return?
On Thursday, Japanese companies including Nomura, Mitsubishi UFJ Financial Group, ANA, and East Japan Railway temporarily suspended internet services as emergency measures. Japan's Ministry of Finance, Meteorological Agency, and National Tax Agency also partially suspended online services.
PHP developers released urgent fixes Wednesday for vulnerabilities that lurked in the software for years, urging users to "update immediately." The bug enables hackers to break into websites using the widely adopted programming language.
Hacking attempts surged dramatically after the vulnerability went public, according to Cloudflare CEO Matthew Prince. "In the 10 hours before it was publicly announced, across the network we saw thousands of attempts to exploit it," Prince said.
Finland's state IT services provider Valtori is gradually lifting precautionary blocks after shutting down government web services. "Restoring services can take days or even weeks," Valtori Director General Hannu Naumanen said in a statement.
Microsoft chief executive Satya Nadella emphasized the episode's severity on Thursday while at a company event in Cologne, Germany. "I've not seen anything like this in a long, long time," Nadella said, underscoring the importance of secure digital systems.
In order to prevent a hacker attack, authorities, universities and companies have temporarily removed their websites from the network. The damage balance is still unclear.
Hospitals, authorities and universities have taken websites from the network as a precaution. In many federal states, first offers are back - but not all of them. What is behind them?