Create a superhero inspired by Jiao Tu, the Chinese door-guarding deity often depicted as a turtle or a snail. Visualize him as a modern security expert, safeguarding digital realms. His attire should be high-tech armor, with motifs resembling protective shells and encryption patterns. Eyes should convey vigilance and impenetrability. Accessories might include a digital shield or a keycard granting access to hidden domains. Embrace a palette of firewall reds, circuit-board greens, and encrypted blacks. Capture the essence of a guardian ensuring the safety of every digital threshold.