Skip to main content
    California Water Company Customer Data Exposed in Cyberattack
    Cybersecurity
    2 min read

    California Water Company Customer Data Exposed in Cyberattack

    If you are a Cal Water customer, your personal information may have been stolen by hackers who published 5GB of customer data online.

    Source

    SecurityWeek

    Original headline: Iranian Cyber Group Handala Claims Cal Water Hack

    Plain-English summary by GetCyberRight. Read the full report at the source above.

    Published Friday, June 12, 2026Updated Friday, June 12, 20262 min read
    Share:

    A hacking group called Handala, which operates from Iran, has claimed responsibility for a cyberattack on California Water Service (Cal Water). The hackers published 5GB of data online, which includes customer personal information and login credentials for a platform called RTKBase. Cal Water provides water service to communities throughout California, so this breach potentially affects many families in the state.

    If you are a Cal Water customer, your personal information may have been exposed. The stolen data includes customer details and credentials that could allow criminals to access accounts.

    Stay one step ahead of scammers

    Weekly cybersecurity briefings for families. No spam, just the threats that matter and what to do about them.

    While we do not know the exact types of personal information exposed, water utility customer data typically includes names, addresses, phone numbers, email addresses, and potentially payment information. Anyone who has an online account with Cal Water should assume their information may have been compromised. You should take action immediately if you are a Cal Water customer. First, change your password on the Cal Water website or customer portal right away. Choose a strong, unique password you do not use anywhere else. Second, if you used the same password on any other websites or accounts, change those passwords too. Criminals often try stolen passwords on multiple sites. Third, watch your bank and credit card statements closely for any unauthorized charges. Fourth, be alert for phishing emails or text messages claiming to be from Cal Water. Scammers often follow data breaches with fake messages trying to steal more information. For long term protection, consider placing a fraud alert on your credit reports by contacting one of the three major credit bureaus (Equifax, Experian, or TransUnion). Enable two factor authentication on your important accounts whenever possible, which requires a code from your phone in addition to your password. Sign up for account alerts from your bank so you get notified of unusual activity. Keep records of any suspicious activity related to this breach.

    This attack reminds us that even essential service providers like water companies can be targeted, so protecting your personal information requires ongoing vigilance.

    Protect Yourself

    Use our GCR Data Shield to check if you're affected and take action.

    Found this useful?

    Share it with someone who could use a heads-up.

    Share:

    Curated from trusted cybersecurity sources by GetCyberRight

    Source: SecurityWeek

    Discussion

    0

    Sign in to join the discussion.

    Stay ahead of cyber threats

    Get our free weekly digest. Real threats, plain language, what to do about them. No spam, ever.