Use the in-game "Notes" app to track codes. If you lose your notes to a hack, remember that previously visited links will appear purple.
Hackers will attempt to compromise your system through various mini-games: Welcome to the Game on Steam welcome-to-the-game-installment-tutorial
You generally have 30 in-game days to find the Red Room before a forced "Game Over". The clock starts at 10 PM each night, and some sites only open during specific windows (e.g., 3:00 AM – 3:45 AM). 2. Defending Against Digital Attacks Use the in-game "Notes" app to track codes