A few more viruses. From left to right:

Stuxnet - A destructive virus capable of infecting computers operating nuclear centrifuges, causing them to malfunction and self-destruct.
Kenzero - A virus built to monitor and record the browsing history of infected computers, publishing the results online.
Locky - A virus that tricks users into activating it by presenting an attachment loaded with malicious macros hidden in garbage data, asking the user to enable macros if the document is incomprehensible. Once active, it will encrypt files on the infect computer into .locky files, demanding a payment to decrypt them.