A wave of brief internet outages hit the websites and apps of dozens of financial institutions, airlines and other companies around the world on Thursday.
The Hong Kong Stock Exchange said in a Twitter post on Thursday afternoon Hong Kong time that its site was facing technical problems and was investigating. In another post, 17 minutes later, he said that his websites were back to normal.
Internet monitoring websites, including ThousandEyes, Downdetector.com, and fing.com, showed dozens of outages, including US-based airlines.
Many of the outages were reported by people in Australia trying to bank, book flights and access postal services.
Australia Post, the country’s postal service, said on Twitter that an “external outage” had affected several of its services and that while most services were back online, they continue to monitor and investigate.
Many services were up and running after about an hour, but affected companies said they were working overtime to avoid further problems.
Banking services were severely disrupted, with Westpac, Commonwealth, ANZ and St George down, along with the Reserve Bank of Australia website.
Most of the services have been restored.
Virgin Australia said the flights were largely operating on schedule after it restored access to its website and guest contact center.
“Virgin Australia was one of many organizations that experienced an outage in Akamai’s content delivery system today,” he said. “We are working with them to ensure that the necessary measures are taken to prevent these cuts from being repeated.”
Akamai has some of the largest companies and banks in the world as customers.
Calls to Akamai, which is based in Cambridge, Massachusetts, but has global services, went unanswered.
The outages came just days after many of the world’s leading websites went offline briefly due to a problem with software from Fastly, another major web services company. The company blamed the problem on a software bug that was triggered when a customer changed a configuration.
Brief internet service interruptions are not uncommon and are rarely the result of hacking or other shenanigans. But the outages have underscored how vital a small number of behind-the-scenes businesses have become to operating the Internet.
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