N the Spring of 2015, three utility companies in the Ukraine received email purporting to come from Ukraine's parliament, the Rada. It was addressed to employees that were used to receiving communications from the Rada dealing with utility regulations. The email included an attached Microsoft Excel spreadsheet with malicious Macros. This was an example of what kind of attack

Trojan horse

Explanation:

A trojan horse attack is a type of malware that misleads users, as it appears unsuspicious at first, but actually presents a threat to the user. A common example is that of an email that contains a malicious attachment. Another common example is that of a fake advertisement. The name comes from the Greek story of the Trojan horse that led to the fall of the city of Troy.

answer:

constructing a building's framework requires a solid foundation

explanation: