WhatsApp API flaw let researchers scrape 3.5 billion accounts
Researchers compiled a list of 3.5 billion WhatsApp mobile phone numbers and associated personal information by abusing a contact-discovery API that lacked rate limiting. [...]
PII covers information that identifies people, making its collection, storage, and disclosure central to privacy protection and breach response.
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Background for this topic.
PII (personally identifiable information) is information that identifies a person directly or can do so when combined with other data. Direct identifiers include names, government identification numbers, passport details, and email addresses; indirect identifiers can include birth dates, precise location, or unique account attributes. The term is used broadly in security, but its legal scope varies: laws and regulations may use different definitions, such as “personal data” under the GDPR or protected health information under HIPAA.
PII is a high-value target because unauthorized access or disclosure can enable identity fraud, targeted phishing, or privacy harm. It may be exposed through compromised applications, cloud storage, logs, endpoints, or third parties. Practitioners should inventory and classify it, collect and retain only what is needed, restrict access, and protect it with encryption or tokenization where appropriate. Monitoring and tested procedures for investigating exposure are important, while retention, deletion, and notification duties depend on the applicable jurisdiction and sector.
Researchers compiled a list of 3.5 billion WhatsApp mobile phone numbers and associated personal information by abusing a contact-discovery API that lacked rate limiting. [...]
Cox Enterprises is notifying impacted individuals of a data breach that exposed their personal data to hackers who breached the company network after exploiting a zero-day flaw in Oracle E-Business Suite. [...]
Pajemploi, the French social security service for parents and home-based childcare providers, has suffered a data breach that may have exposed personal information of 1.2 million individuals. [...]
A Princeton University database was compromised in a cyberattack on November 10, exposing the personal information of alumni, donors, faculty members, and students. [...]