Cyber security firms have warned that the risk of retaliatory cyber activity has increased following US and Israeli strikes on Iran, with UK organisations urged to heighten vigilance.
Sophos has rated the current threat level as “Elevated”, with the highest risk in the coming days and weeks. Historically, Iran-linked actors have responded to geopolitical escalation with ransomware, wiper malware, DDoS attacks and “hack-and-leak” campaigns. CrowdStrike has already reported reconnaissance and DDoS activity consistent with Iranian-aligned groups, which can precede more disruptive operations.
For UK businesses, the danger is likely to be opportunistic targeting of exposed systems rather than direct state-level attacks. Enforcing multi-factor authentication, patching internet-facing services, reviewing remote access controls and validating secure backups are practical steps organisations should prioritise while tensions remain high.
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