<p><span class="h-card" translate="no"><a href="https://mastodon.social/@whitequark" class="u-url mention">@<span>whitequark</span></a></span> Best I could do is a DOS virus that I wrote about 1½ years ago which infects .COM files in the current directory and clobbers the contents of the BIOS keyboard buffer every few keystrokes. Windows Defender started detecting it halfway through development.</p>