Stealth and Evasion

Like you, a program can attack anything it can see. As programs have no "front" or "back" facing (what's the front of a string of code?), this means they can see you coming in any direction, all the time.

Well, maybe. This is where stealth and evasion come in. When you are running a Stealth or Invisibility-type program, the opposition has to make a special roll to see if it is aware of you:

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The other side of Stealth and Evasion is detecting the unseen. To use a Detection program, the Netrunner must make a roll exactly as when using a Stealth/Evasion program above. Note that Netrunners can use Detection programs against the Stealth programs of other runners and vice versa.