David works in the Accounts department of Touchdown Ltd. He has received an email from a sender he is unfamiliar with. The email asks him to look at an invoice which the sender believes includes an error. There is an attachment to the email. David has recently undergone Cyber Security training and is suspicious of the email. What type of security threat does David think the email contains?

In Data Analytics, what is the term 'black swan' used to describe?

Fluffy Pillows Ltd has recently expanded its operations and has hired more staff. These staff will work remotely, and because of this, Fluffy Pillows Ltd is in need of buying and upgrading their IT systems. The CEO of Fluffy Pillows is examining the security of currently held data in preparation for the expansion and has recently completed a document that looks into what data is stored where and what the consequences would be if this data were to be stolen or corrupted. In his research, he has found multiple data entries for the same information, which he believes could lead to inaccuracies in data reporting. He is also concerned that the data isn't being stored securely and is unsure whether he should retain some of the confidential personal details on employees who have left the business. He has decided that along with the introduction of new systems, it is important that all members of staff at Fluffy Pillows are aware of the responsibilities of storing data correctly and the risks of cyber attacks. How can Fluffy Pillows ensure data is accessible for the new staff members who work from home?

Which of the following approaches to cyber security takes a bottom-up approach to assessing vulnerabilities meticulously item by item?