question from the book nerds by michael buckley. when jackson followed the nerds out of class, what did he seem them do?

Kpa - known-plaintext attack

$1 trillion in certificates of deposit $1 trillion in currency

When your using a username and you use the same name for everything your being secure because if someone sites there and uses a few different search engines they wouldn't use just one because they all use differnt web crawlers so they woud have different results. but anyway by typing thag username into those searches they can assume everything they find is probably you because you use the same username for everything.