Group calling itself "BlackShadow" hacks Shirbit Insurance, whose clients include many civil servants. "The organization that claimed responsibility for this hack could be a cover for a foreign intelligence agency, maybe even the Iranians," cyber expert says.

The personal information of thousands of Israelis was compromised Tuesday following a massive hack into the database of a major local insurance company.

The Capital Markets Authority and the National Cyber Directorate confirmed that there had been a cyberattack on the Shirbit insurance company and that its clients' information had been leaked in the breach.

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Founded in 2000, the Netanya-based Shirbit has upwards of 200 employees and is one of the largest insurance firms in Israel. Several years ago it won a state tender and many of its clients are civil servants.

In a joint statement, the two agencies said that an investigation into a possible cyberattack was launched on Monday night amid suspicions that the company's server had been compromised.

"An initial investigation found that information on the details of clients' insurance is involved," the statement said, noting that the investigation was still ongoing.

The hack was later claimed by a group calling itself "BlackShadow," which posted images of some of the information taken, as well as technical details intended to show the scale of the assault, on its social media accounts.

"A huge cyberattack has been taken place by Black Shadow team," the group tweeted. "There has been a massive attack on the network infrastructure of Shirbit Company, which is in Israel economic sphere," the group's poorly phrased tweet read.

Blackshadow warned that it was in possession of Shirbit's client database, tweeting photos of ID cards, drivers' licenses, emails, and forms containing private information.

One of the documents linked appeared to show the personal details, including the home address and phone numbers of Tel Aviv District Court Deputy President Judge Gilad Neuthal.

In a Telegram message to KAN 11 News, the group stated that they had other targets that they would disclose later and that they conducted the attack "for money," without further clarification.

The group's Twitter account was subsequently suspended.

Read more at Israel Hayom