Following news allegations of a significant Twitter data leak from last month, the Irish Data Protection Commission (DPC) has opened an investigation.
More than 5.4 million Twitter users were impacted by this leak, which contained both public data scraped from the website and private phone numbers and email addresses.
The information was accessed by taking advantage of an API flaw that Twitter rectified in January.
The Data Protection Commission (DPC), which is Twitter’s primary EU watchdog, is investigating whether the social media behemoth has complied with its obligations as a data controller regarding the processing of user data and whether any laws, including the General Data Protection Regulation (EU GDPR) and the Data Protection Act 2018, have been broken.
Two years ago, the DPC penalized Twitter €450,000 (about $550,000) for failing to report a breach to the DPC within the 72-hour window mandated by the GDPR and for failing to provide proper breach documentation.
The DPC also fined Meta €265 million ($275.5 million) in November 2021 for a significant data breach on Facebook that exposed the personal data of hundreds of millions of users globally.

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