Software engineer on the first 64 bits Unix (Cray).
System & network admin. on top of a > 1000 Mac.
30 years experience on top of Unix (and internals).
Chief Information Security Officer.
Security through obscurity: A father wishing to avoid his son to taste his bottle of vodka decided to hide it. He transferred it within a bottle of plain water with no label on it and put it in the fridge among the other bottles of water. On the evening coming back from his work he found his son dead on the floor of the kitchen. A broken glass on the ground, an empty bottle of water and an orange sirup bottle stand still on the work plan…
2 Notation for function $ + \rightarrow \times $ jul 21 '13
0 Composition of isometries dec 19 '13