On the 6th, NHK interviewed several Japanese websites that posted on SNS that a pro-Russian hacker group had carried out a cyber attack. We found that some problems continued, such as being unable to browse pages.
Of these, the website of the local tax portal system "eLTAX" under the jurisdiction of the Ministry of Internal Affairs and Communications and the website of the Local Tax Agency, which operates "eLTAX", are in a state where they cannot be viewed as of 4:00 pm. It means that it continues.
The system of "eLTAX" is said to be available, and it is said that it is working on restoration including the homepage.
In addition, the administrative information portal site "e-Gov" under the jurisdiction of the Digital Agency was temporarily unavailable, but it was mostly restored on the night of the 6th.
However, even at 4:00 pm, some functions of the site are still out of order, such as being unable to log in to the electronic application service again on the 7th.
Even on private company sites and SNS
In addition, according to JCB, a major credit card company, as of 4:00 p.m., some of the company's websites remained inaccessible, and a DDoS attack was detected due to a large amount of access. about it.
There is no impact on the payment system, and we are investigating the detailed cause.
On the other hand, the social network service "mixi" experienced a temporary service failure on the night of the 6th, making it difficult to use, but it is now restored.
In addition, according to the Nagoya Port Management Association, the homepage of the management association was temporarily difficult to browse, but it is now restored.
There is a lot of access to the website, and it is said that the server was overloaded, and we are proceeding with a detailed investigation.
Chief Cabinet Secretary Matsuno "Confirming the cause"
Chief Cabinet Secretary Matsuno said at a press conference on the afternoon of the 7th, "This morning, the Digital Agency learned that it was not possible to log in to the electronic application on the administrative information portal site 'e-Gov' under the jurisdiction of the Digital Agency. , We are trying to make it known on Twitter, etc.
After that, he said, "We have received reports that the situation is different from the failure that made it impossible to browse the site itself like yesterday, but the Digital Agency is currently confirming the cause, including whether it is related." I was.
On the other hand, he explained that he continued to confirm the cause of the access failure on the 6th, including the relationship with a hacker group that supports Russia.
Expert “Prepare a wide range of preparations to respond to DDoS attacks”
Information security experts are urging governments and businesses to broadly prepare for DDoS attacks.
According to Kiyotaka Domae, a senior engineer at Internet Initiative Japan, an information security company that observes DDoS attacks around the world, direct data related to this attack has not been observed, but the world has vulnerabilities. It is pointed out that a large amount of communication may have been sent to the website by using a ``botnet'' that hijacks the IoT devices inside and exploits them for attacks.
On top of that, as countermeasures against DDoS attacks that concentrate access to servers and bring them down,
▼ a mechanism called "CDN = content delivery network" that distributes servers to reduce the load, and
▼ communication sent by attacks It is possible to introduce a system that automatically analyzes whether it is a thing and blocks it.
In addition, in the event of a large-scale attack, it is possible to cooperate with the telecommunications carrier to take measures such as restricting communication. He pointed out that it is also important for site operators to secure a means of disseminating information.
Mr. Domae calls for preparations against cyberattacks, saying, ``What business or service will stop if the site is attacked?