You are given a ciphertext that you are told was encrypted with one of the three historical encryption methods: transposition cipher, monoalphabetic cipher, polyalphabetic cipher. You are also told that the plaintext is an English language document. Concisely explain how you can use the single letter frequencies of the ciphertext letters to help you to determine which encryption method may have been used. For each encryption method, explain whether using only single letter and bigram/trigram frequencies are sufficient to cryptanalyse a ciphertext.

in 2007, floridians died in alcohol-related collisions.a.  501b.  1,051c.  5,015d.  10,839

You have just been hired as an information security engineer for a large, multi-international corporation. unfortunately, your company has suffered multiple security breaches that have threatened customers' trust in the fact that their confidential data and financial assets are private and secured. credit-card information was compromised by an attack that infiltrated the network through a vulnerable wireless connection within the organization. the other breach was an inside job where personal data was stolen because of weak access-control policies within the organization that allowed an unauthorized individual access to valuable data. your job is to develop a risk-management policy that addresses the two security breaches and how to mitigate these risks. requirementswrite a brief description of the case study. it requires two to three pages, based upon the apa style of writing. use transition words; a thesis statement; an introduction, body, and conclusion; and a reference page with at least two references. use a double-spaced, arial font, size 12.

Jason works as an accountant in a department store. he needs to keep a daily record of all the invoices issued by the store. which file naming convention would him the most?