Some of the most important ways to reduce risk boil down to the fundamentals of security. Keep systems well-patched, prevent data from spreading around, make sure systems are properly segmented, and watch where you store valuable log-in data. 28 percent of Oracle users have never applied a Critical Patch Update or don’t know whether they’ve done so, according to a survey. Experts: What happens in a database, stays in the database — as soon as production data starts making its way into other places, and risk shoots sky-high.”]
Source: https://www.darkreading.com/database-security/5-steps-for-good-database-hygiene