Iranian cyberattacks against Israel have sharply increased since the start of joint US-Israel operations against Iran earlier this year, according to a senior Israeli security official cited by Reuters on Monday. Yossi Karadi, Director General of Israel’s National Cyber Directorate, told Germany’s Die Welt newspaper that during Israel’s military campaign against Iran in June 2025, authorities recorded about 1,600 hostile cyber incidents. By June 2026, that number had surged to nearly 4,800.

Karadi said the attacks targeted Israel’s critical infrastructure, central agencies, small and medium-sized businesses, and public systems. Among smaller firms, law and accounting offices were particularly affected. He noted that Israel had so far managed to repel cyberattacks on key infrastructure sectors but warned that cyberspace, unlike traditional battlefields, has no ceasefire.

Iran typically denies conducting hacking or cyber operations against other countries and often reports being targeted by cyberattacks itself, according to the report.