Today I found that all indices on our Test ES cluster was removed and one new index "warning" was created there. And I found following text from the raw index data: SEND 0.2 BTC TO THIS WALLET: 1DAsGY4Kt1a4LCTPMH5vm5PqX32eZmot4r IF YOU WANT RECOVER YOUR DATABASE! SEND TO THIS EMAIL YOUR SERVER IP …

Ransom attack on Elasticsearch cluster?

Youxu (Xudong You) January 12, 2017, 5:41am 5

No sensitive data on our test cluster.

Anyway this post is to remind others to be careful on their ES security

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