A computer security expert believes that, the Oracle databases are vulnerable to an attack that would give hackers access and control over sensitive corporate and government database systems, without the need for a user id or password, according to Reuters.

Talking about the flaw after presenting his research at the Black Hat hacking conference in Washington on Wednesday, Litchfield said “It allows an attacker without a user ID and password to take complete control. All firewalls become irrelevant.”

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