I hacked someone and hit a firewall trap, giving me -99.99% cloak, however I used a dark pyramid artifact and my cloak moved back up to 50. It isn't just a display error either, I was able to hack someone after doing this.

And your problem is... ???

The description for the dark pyramid is that it temporarily adds 50 to your cloak. It seems as though the most recent effect on a ship is the one that takes precedence, so yeah a pyramid after a firewall would bring your cloak back up to 50. Cloak=50 isn't going to win you any hacking awards so if you were successful the target must be a very low level or have basically 0 scan. If you are concerned about someone using this "trick" to counter your firewall, install a scanner. It wouldn't have to be much, just enough to counter their cloak.

Sorry, I didn't know that everything here had to be something that negatively effected me. Figured Dan might like to know something may not be working the way he intended it to.

What is the point of having a Firewall Trap on if someone can still hack you afterward with this? As for your scanner idea, Quantum Flare says hi.

All negative and positive effects on your ship take effect in the order they are put on your ship. So if you use a dark pyramid and then get hit with a firewall your cloak is 0.

Also note that traps work the same way: if you place a hyclon on first then the hyclon trap will be the first to activate!