This is not brilliant, but on any server where you store data, on how you use encryption / hashing, and also on the methods of protecting software and applications that you used to protect against certain vulnerabilities.
, ( , IMHO) shinyapps.io:
shinyapps.io . Shiny , SSL. , .
, , .
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grtcorp.com:
- ( SOX) 2002 , Enron. , .
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10 - OWASP:
https://www.owasp.org/index.php/Category:OWASP_Top_Ten_Project