About Alexander Polyakov. QSA and PA-QSA. Director of security audit department in Digital Security. head of Digital Security Research Group (dsecrg.com). One of the contributors of PCIDSSRU.com community. Contribute personal blog about pa-dss http://pa-dss.blogspot.com Expert in enterprise applications and database security. Author of book "Oracle Security from the Eye of the auditor: Attack and Defence".