Critical Elasticsearch Exposure: 544M Plain-Text Credentials Found Publicly Accessible

SOCRadar discovered an unauthenticated, internet-facing Elasticsearch instance exposing ~544 million plaintext credentials (88.3 GB) in a URL:email/username:password format; the dataset is exploitation-ready and correlates with underground forum listings, posing immediate high risk for credential stuffing, account takeover, and large-scale automated abuse.