kirjavascript

here's a JS one liner that handles scream and unscream in one function

  transform=s=>[...s.toUpperCase()].map(s=>(l="BÁGẲLẬQǞVÀCĂHẴMẦRȦWẢDẮIǍNẨSǠXȂEẶJÂOẪTẠYĀFẰKẤPÄUȀZĄ")[l.indexOf(s)^1]||s).join``

transform is forbidden but -webkit-transform seems to work :^)

It can and we have achieved Arbitrary Code Execution in NES Tetris.

The setup is horrifyingly complicated and precise though, involving getting some near-impossible scores and entering specific names in the highscore list, then reaching the crash on the same frame that the internal values for random number generation happen to represent a jump instruction to said highscore list (and we get lucky and various registers also happen to contain values we need).

Then from there, there is some bootstrapping before total control is achieved.

sure they can, unrequested crypto miners running in the background are malware