You are trying to break into a highly classified top-secret mainframe computer with highest security system in place at Merclyn Barley Bank located in Los Angeles. You know that conventional hacking doesn't work in this case, because organizations such as banks are generally tight and secure when it comes to protecting their systems. In other words you are trying to penetrate an otherwise impenetrable system. How would you proceed?

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B. Try to hang around the local pubs or restaurants near the bank, get talking to a poorly-paid or Social engineering by befriending a disgruntled or underpaid employee near the workplace targets the weakest link in any security model - humans. Insiders can provide credentials, bypass physical access controls, or reveal sensitive information that no technical exploit could uncover, making this the most viable approach against a hardened, well-patched target.

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A. Look for "zero-day" exploits at various underground hacker websites in Russia and China and buy Zero-day exploits purchased online are still technical attacks that a high-security bank environment may detect, sandbox, or have already mitigated through network isolation.

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C. Launch DDOS attacks against Merclyn Barley Bank's routers and firewall systems using 100, 000 DDoS attacks against routers and firewalls disrupt availability but do not grant unauthorized access to classified data stored on the mainframe itself.

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D. Try to conduct Man-in-the-Middle (MiTM) attack and divert the network traffic going to the Merclyn MiTM attacks require viable network interception points that a highly secured, internally isolated mainframe environment would not expose to an outside attacker.

You are trying to break into a highly classified top-secret mainframe computer with highest security system in place at Merclyn Barley Bank located in Los Angeles. You know that conventional hacking d

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