8.4TB in email metadata exposed in university data leak

guest · Jun 10, 2019

8.4TB in email metadata exposed in university data leak
A database owned by Shanghai Jiao Tong University required no authentication to access
June 10, 2019
https://www.zdnet.com/article/8-4tb-in-email-metadata-exposed-in-university-data-leak/

An exposed database belonging to Shanghai Jiao Tong University exposed 8.4TB in email metadata after failing to implement basic authentication demands.
The exposed server was discovered on May 22, 2019, by Cloudflare Director of Trust & Safety Justin Paine.

As described on the Rainbowtabl.es security blog, Paine found the ElasticSearch database through a Shodan search.
The open database contained 9.5 billion rows of data and was active at the time of discovery, given that its size increased from 7TB on May 23 to 8.4TB only a day later.

The information contained in the database was packaged up through Zimbra, a popular open-source email solution used by over 200,000 businesses worldwide.
Email threads between specific users could be seen, but it is worth noting that only the metadata was involved, and neither subject lines or email body content was exposed.
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