The Handala Hack Group, a cyber outfit aligned with Iran's "axis of resistance," claimed on April 2 to have breached the networks of PSK Wind Technologies, an Israeli firm that designs integrated command and control systems for the country's air defence network.

The group said it had extracted "all sensitive data" from PSK Wind's servers, including classified documents relating to command and control centres and communication systems. It claimed the stolen information had been "transmitted directly to the missile units of the Axis of Resistance."

The claims could not be independently verified. PSK Wind Technologies and the Israeli military did not immediately comment on the alleged breach.

Handala issued a threat timed to the Jewish holiday of Passover, stating: "What you celebrate as Passover will soon turn into a day of unforgettable mourning." The group warned that "none of your command or defence centres will be secure."

The claimed hack is the latest in a series of cyber operations targeting Israeli military infrastructure since the war began on February 28. Iran and its allied groups have pursued a parallel cyber campaign alongside conventional missile and drone strikes, seeking to degrade Israeli intelligence and defence capabilities.

If confirmed, a breach of PSK Wind's systems would be significant. The firm is described by the hackers as the "mastermind behind the command and control centres" of Israel's air defence network, which has been under sustained pressure from daily Iranian, Houthi and Hezbollah missile and drone attacks throughout the conflict.

Israel's air defence systems, including Iron Dome, David's Sling and Arrow, have been central to the country's ability to intercept incoming projectiles. Any compromise of the command architecture linking these systems could have operational consequences.

Iran's IRGC separately threatened on March 31 to target 18 US technology and AI companies it accused of providing targeting data for assassination operations against Iranian nationals.