Correction from last time – HVAC – Heating, Ventilation and Air Conditioning. Thanks Tim! (no, really)
1975 – First self contained digital camera. 100px by 100px (0.01 megapixels) – By who? Any guesses? CCD sensor. Took 23 seconds to record an image
1981 – Sony Mavica camera. 0.72mp....
1932 Jay B. Nash
“Within our grasp is the leisure of the Greek citizen, made possible by our mechanical slaves, which far outnumber his twelve to fifteen per free man… As we step into a room, at the touch of a button a dozen light our way. Another slave sits twenty-four hours a day at our...
Authentication vs. Authorization
One-factor, “something you know”
Cleartext, hashes, salts
Two-factor, “something you have, something you know”
Tokens, sms, totp
Back them up! Authy will do this for you.
Don’t use things that can...