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Iran-Linked Hackers Breach California Water Systems in Retaliation for US Strikes

Iran-Linked Hackers Breach California Water Systems in Retaliation for US Strikes

First seen 12 Jun 2026, 11:07 UTC

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ThreatCluster AI
ThreatCluster June 13, 2026 at 09:25 UTC
  • Handala claims to have breached California water systems as retaliation for US airstrikes.
  • The group released 5 GB of data as proof but refrained from disrupting water supplies.
  • The incident highlights escalating cyber operations linked to the US-Iran conflict.

The Iran-aligned hacking group Handala has claimed responsibility for breaching California water utility systems, framing the operation as retaliation for recent US airstrikes that damaged water infrastructure in Iran. The group released screenshots purportedly showing access to internal operational dashboards and customer records from various California water facilities. Although they claimed to have the capability to disrupt water supplies, Handala stated they chose not to do so, describing the act as a warning to the US government. The breach was announced just two days after US strikes on June 10, which left over 20,000 residents in Sirik, Iran, without access to safe drinking water. Handala's statement emphasized that future attacks against Iranian interests would be met with reciprocal measures targeting US infrastructure. The group has previously been linked to other cyber operations, including a significant attack on medical device maker Stryker earlier in 2026. This incident marks a notable escalation in cyber operations amid the ongoing US-Iran conflict.

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Timeline

2026-06-10
US airstrikes damage water infrastructure in Iran
US forces struck two reservoirs in Sirik, Iran, cutting off drinking water for over 20,000 residents.
Freepressjournal.In
2026-06-12
Handala claims breach of California water systems
The group announced it hacked California water facilities in retaliation for US strikes, releasing internal data as proof.
En.Mehrnews
2026-06-12
Handala warns of reciprocal measures
The group stated that future attacks on Iran would be met with immediate responses targeting US infrastructure.
Iranintl
2026-06-12
Data published by Handala as proof of breach
Handala released 5 GB of data from the breach, claiming it could have disrupted water supplies but chose not to.
Middleeasteye

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