Odido Cyberattack 2026: 6.2 Million Customer Records Stolen in Major Data Breach

Breaking: Odido Suffers Major Cybersecurity Breach Affecting 6.2 Million Customers

Dutch telecommunications giant Odido has been hit by a massive cyberattack that compromised the personal data of approximately 6.2 million customers, making it one of the largest data breaches in the Netherlands' history. The attack, discovered over the weekend of February 8-9, 2026, targeted Odido's customer contact system, exposing sensitive information including names, addresses, phone numbers, email addresses, bank account details, birth dates, and identification document numbers.

What is the Odido Data Breach?

The Odido data breach represents a significant cybersecurity incident where hackers gained unauthorized access to a customer contact system containing personal information for millions of Dutch telecom customers. Odido, formerly known as T-Mobile Netherlands, is the country's largest mobile phone company with approximately 6.9 million customers, meaning the breach potentially affected nearly 90% of their customer base.

Compromised Data Details

According to Odido's official statement, the stolen data includes:

• Full names and residential addresses
• Telephone numbers and customer identification numbers
• Email addresses and bank account information
• Date of birth and identification document numbers
• ID validity dates and customer numbers

Importantly, the company confirmed that passwords, call records, location data, and billing information were not compromised in this attack. This distinction is crucial as it limits certain types of immediate fraud but still leaves customers vulnerable to identity theft and targeted phishing campaigns.

Timeline and Response to the Cyberattack

The breach timeline reveals a concerning pattern of modern cyber threats:

1. Discovery Weekend (February 8-9, 2026): Odido received initial signals of a potential data leak
2. Immediate Response: The company launched an investigation with cybersecurity experts
3. Access Blocked: Hackers' access to systems was terminated
4. Regulatory Notification: Incident reported to Dutch Data Protection Authority (AP)
5. Customer Notification: Affected customers to receive emails within 48 hours

Odido's CEO Søren Abildgaard stated, 'We take this incident extremely seriously and are working around the clock to understand the full scope and protect our customers. Our services remain fully operational, and we're committed to transparency throughout this process.'

Cybersecurity Implications and Industry Context

This breach occurs within a broader context of escalating cyber threats targeting the telecommunications sector. According to recent 2026 cybersecurity statistics, data breaches have reached record levels globally, with system intrusion accounting for 53% of all breaches. The telecom industry faces particular vulnerabilities due to the vast amounts of personal data they manage.

Comparison to Recent Telecom Breaches

What Customers Should Do Now

Odido has advised all customers to take immediate protective measures:

• Monitor accounts: Watch for suspicious activity in bank accounts and email
• Be alert to phishing: Criminals may use stolen data for targeted scams
• Check official communications: Odido will contact affected customers via email
• Consider credit monitoring: For high-risk individuals, consider credit monitoring services
• Report suspicious contacts: Immediately report any suspicious communications to authorities

Regulatory and Legal Implications

The breach has significant regulatory consequences under the GDPR compliance requirements and Dutch telecommunications law. Odido has already reported the incident to the Autoriteit Persoonsgegevens (AP), the Dutch Data Protection Authority. Under GDPR regulations, companies can face fines of up to 4% of global annual turnover or €20 million (whichever is higher) for serious data protection violations.

This incident follows Odido's previous regulatory challenges, including a €175,000 fine in 2025 for unlawfully processing traffic and location data during a collaboration with the Dutch statistics agency CBS. The current breach could result in substantially higher penalties given its scale and the sensitive nature of the compromised data.

FAQs: Odido Data Breach 2026

What information was stolen in the Odido breach?

The stolen data includes full names, addresses, phone numbers, email addresses, bank account details, birth dates, and identification document numbers for approximately 6.2 million customers.

Are my passwords and financial data safe?

Yes, Odido confirms that passwords, call records, location data, and billing information were not compromised in this attack.

How will I know if I'm affected?

Odido is sending notification emails to all affected customers within 48 hours of the announcement. Check your email associated with your Odido account.

What should I do to protect myself?

Be vigilant about suspicious communications, monitor your financial accounts, and consider enabling two-factor authentication where available. Odido recommends being particularly cautious of phishing attempts using your personal information.

Will Odido services be disrupted?

No, Odido confirms that their telecommunications services remain fully operational, and customers can continue using phone, internet, and television services normally.

Sources

NOS News Report

NL Times Coverage

Dutch Review Analysis

Odido Company Information