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above is the only two security related ones &nbsp;. Hacking <br />
Certified Information Security Expert (CISEv2.0) ?
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above is the only two security related ones  . Hacking
Certified Information Security Expert (CISEv2.0) ?

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what is the best to do on the security and later want to run the training for my Customers
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what is the best to do on the security and later want to run the training for my Customers

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Can you give more details on this
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ITIL/Cobit IT security management standard

Network security consists of the policies adopted to prevent and monitor authorized access, misuse, modification, or denial of a computer network and network-accessible resources. Network security involves the authorization of access to data in a network, and covers a variety of computer networks; conducting transactions and communications among businesses, government agencies and individuals. Networks can be private, such as within a company, and others which might be open to public access.