In the context of the outer network, the most dangerous elements are not the past data fortresses, but the omnipresent viruses, antivirus software, rogue AIs, and other hazardous data entities.
These stationary data fortresses are relatively safer places instead.
However, saying they are relatively safe only means the ICE inside won't come out and kill people.
Large threats in the area had already been cleared by Lucy in advance, so there won't be too much malicious software refilling this hole in the short term. Players have enough time to find the vulnerability in the data fortress's external firewall.
Since the collapse of the old network, a large amount of technical data was lost in it, causing real-world technology to progress slowly, but hacking technology hasn't fallen behind. Both the AIs outside the wall and the hackers inside are advancing, the only difference is in the extent.
