A Mexican media company’s unprotected Amazon S3 container exposed more than 540 million records of Facebook users’ comments and interests, while a defunct integrated Facebook app, At the Pool, left online sensitive information of more than 22,000 users, cloud-security firm UpGuard announced on April 3. The data, found by the company’s storage-scanning service, had explicitly been saved in two separate Amazon Simple Storage Service (S3) buckets, allowing public downloading, according to a blog post.

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