Although Brutalism is not my favourite architectural style, I still appreciate it done well. This particular building is <20 minutes from where I sit. "Decaying" as it is sometimes described, can be attributed to lack or complete absence of maintenance. This style was sold to government for their civic buildings partly because it was low maintenance, but low is not no.
It would look better with more maintenance, less graffiti, the absence of litter, and more uncluttered space around it.
A key element of the design of lawful intercept is not to trust the company running the network. Otherwise employees of that company would become targets for organized crime influence, among what are probably a few other considerations. The network operator isn't told about intercepts, and the relatively low rate of traffic intercept, the node has to support up to 3% of traffic intercepted, at least that was the spec at the time, makes it relatively easy for that traffic to be hidden from network management tools. It's not supposed to show up in your logs or network management reporting.
Intercepts originate on LI consoles operated by law enforcement agencies. This sounds pretty good so far. Until a hacker breaks into an LI console. Now that hacker can acquire traffic with pinpoint accuracy, undetected by design.
I have always been skeptical of claims that network operators have eliminated salt typhoon from their networks. I do not believe they know when the exploit began. Nor can they tell if their networks are truly free of salt typhoon activity. There are multiple vendors of LI console software. It's a standardized interoperable protocol to set up intercepts. So there's no one neck to wring.