What do the ILOVEYOU and Melissa virus attacks have in common?

Neither the ILOVEYOU nor the Melissa virus primarily functioned as a denial-of-service (DoS) attack, although they could cause service disruptions due to network congestion and resource consumption.

While both Melissa and ILOVEYOU utilized email for propagation and social engineering tactics, they are fundamentally different in their technical implementation, such as Melissa being a macro virus affecting Microsoft Word documents and ILOVEYOU being a VBScript worm, thus having 'nothing in common' in the specific, narrow context of the other given attack categories.

While both viruses employed deceptive techniques, 'masquerading attacks' is not a standard, precise classification for either, and is too broad to describe their specific technical nature.

Although both viruses heavily relied on social engineering to trick users into execution, this option, if B is correct, suggests that their shared social engineering aspect is not considered a defining technical commonality for this particular question.