The latest revelations from the leaked DNS cache of the Israeli government highlight the growing threat of malicious software targeting DNS servers, a practice that is often overlooked when looking at the overall security of web applications.
The DNS cache leak, which was revealed on Thursday by a user with the handle “kavas”, reveals that the Israeli Government uses two DNS servers.
One of them is owned by Tel Aviv University, and the other is owned and operated by a private Israeli firm called Netvio.
Netvio was not available for comment at the time of publication.
In an emailed statement, the company said it was “aware of the leak” and “we are looking into the matter”.
Netvios spokesperson Lior Bar-Hillel told The Jerusalem Times on Friday that the company “has not seen or heard about this information”.
Netanyahu’s personal website has also been hacked.
The DNS cache was published by “kafrk”, who said that it was the result of a “snooping operation” carried out by a “lone hacker” on Thursday night.
He did not elaborate on the details of the operation, but did say that the data was “published in order to raise awareness” about the vulnerability of DNS servers in Israel.
The Israeli Government has been criticised for its lack of security on the internet, with some saying that the country has fallen victim to attacks such as DNS cache attacks, which are sometimes used to compromise sensitive government systems.
Israel has been plagued by a string of DNS cache leaks in recent months, most recently from an Israeli developer named Hossam Zehaf, who claimed that the state’s DNS servers were compromised and used to attack the Israel Telecommunication Authority (ITA).
In response, the Israeli Communications and High-Tech Commission (ICHC) called for “urgent action” to stop the leak.
Netanyahu himself has previously defended the use of DNS caches, saying that they allow the government to “better control the DNS server”.
However, Israeli internet users have also been warned not to use DNS cache to make “sensitive or sensitive” decisions, including purchasing or renting a home.
“Netvium has a zero tolerance policy for malicious attacks against DNS servers,” the company told The Times.
“As a result, we recommend that customers not use DNS to make critical decisions regarding their DNS server, such as buying a home or renting.”
Israel is also known for its use of “spyware” to spy on internet users, although this has not been a problem in recent years.
In January, Israeli authorities said they had seized the data of the US National Security Agency, after US President Donald Trump criticised Israel’s use of spyware, saying he believed it was used “to spy on our citizens”.