I'm just miffed about this on a deck. Seriously, it's...
Alright, here's my "win the matrix" build. First, start with the cheap "Data Anomaly" quality. Sprites are so uncommon, it's worth being automatically found-- Especially when it doesn't mean the TM can find you automatically.
Then we get a potent cyberdeck. The Shiawase Cyber-4 is ideal, but for a point less the Azteca 300 will be doable. Load Sneak and Smoke-And-Mirrors, and Signal Scrubber. Data Jack cyberwear of course, and throw in the Vectored Signal Filter (hardwired in). Mod your deck to boost your highest attribute array by 1, lowering something else (or taking the 2 perm damage). You now have a Sleaze of, that's right, 15. Combined with a maxed out LOG, potentially doing something like Restricted Gear (Cerebral Booster), and Exceptional Attribute (LOG) for 10 LOG.
With around 25 dice to resist Matrix Perception, no normal hacker will find you, and hosts of rating 10 or lower are likely to have difficulty-- 6 or below stands almost no chance.
You're actually so stealthy that you're better off using Attack actions, because WCS is they start making Matrix Perception tests and fail, where as a failed Sleaze would mean they mark you. You could metaphorically burn a host to the ground and laugh in the flames while the spider and all the IC flail around unable to spot you.
You're not even that disadvantaged! You still have your second highest attribute available for Attack and your dice pools for Cybercombat and such aren't negatively affected. Aside from modding the deck for higher Sleaze, these are all things a decker could do by accident! Just logical stuff to be more effective.
I mean... Shit! That's 8 hits on average. Considering limits, you might actually be beyond most hardware's capability of spotting you.