Explain the main security risks of information and their classifications

Risk: A possibility that a threat exploits a vulnerability in an asset and causes damage or loss to the asset.

Risk – is the likelihood that something bad will happen. In order for us to havea risk in a particular environment, we need to have both a threat and a vulnerability that the specific threat can exploit. For example, if we have a structure that is made from wood and we set it on fire, we have both a threat (the fire) and a vulnerability that matches it (the wood structure). In this case, we most definitely have a risk

Security threat – any action/inaction that could cause disclosure, alteration, loss, damage or unavailability of a company’s/individual’s assets

There are three components of threat:

Targets: organization’s asset that might be attacked:

information (its confidentiality, integrity, availability), software, hardware, network service, system resource, etc.

Agents: people or organizations originating the threat – intentional or non-intentional:

employees, ex-employees, hackers, commercial rivals, terrorists, criminals, general public, customers

Events: type of action that poses the threat:

misuse of authorized information, malicious / accidental alteration of information, malicious / accidental destruction of information, etc.

Each organization must prioritize its threats based on:

1. its business priorities

e.g. what are the company’s main assets:

(a) web servers (e-commerce company),

(b) data (softwarecompany)?

2. conditions under which its key assets operate

e.g. are there any wireless links / access points?

3. organizational strategy regarding risk

e.g. cost/time of encrypting every file/email vs. worker’s productivity

Ø Example: Companiesandtheirthreats

Ø Which of the three threats is most critical for which of the three companies?

Amazon               Hospital                                 TD Bank

 

 




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