We’ve been warning about this for literally three decades, ever since CALEA mandated wiretap-ready telecom infrastructure. And this is merely the latest example of how these dangerous interfaces can be turned against us by our adversaries.
https://mastodon.social/@fj/113253726161428151
Tl;dr: creating one-stop shopping for attackers is a bad idea.

Exploits of "lawful access" interfaces, such as the Chinese attack reported today by the WSJ, appeared almost immediately after they became standardized in the 90's. The most famous example is the case known as "the Athens Affair" https://spectrum.ieee.org/the-athens-affair .

It was a bad idea then, and still a bad idea now.

The Athens Affair

How some extremely smart hackers pulled off the most audacious cell-network break-in ever

IEEE Spectrum
The Athens Affair is interesting for a number of reasons, but it's particularly notable that the switch that was compromised didn't actually have the CALEA option installed from the factory (since it wasn't then required in Greece). But it was added through a software update (induced by the attacker), and then exploited.
Anyway, my "told you so" muscles are pretty weary at this point.
Also, I'd be remiss if I didn't note that all the reasons that "lawful access" features in telecom infrastructure are risky apply at least equally to the periodically revived proposals for "key escrow" backdoors in cryptographic systems. Fortunately, we've mostly held back the tide on those, but they come up every few years. It would be a security disaster if they're ever mandated.

Mandated wiretap interfaces and cryptographic backdoors are *expensive*, both in terms of money and, more importantly, exposure to risk. Worse, those burdens are borne inequitably.

Overall, almost no one is the subject of a lawful wiretap, even in places where wiretapping is an important investigative tool. Most people aren't suspects. But these mandates degrade security (and impose other costs) for *everyone*, the vast majority of whom will never be wiretapped.

A far more equitable, more secure, and less expensive approach is to devote law enforcement resources to targeting actual suspects, e.g., by the traditional methods such as informants and technical approaches such as "lawful hacking". While these aren't particularly pleasant for those targeted by warrants, they have the great virtue of allowing law enforcement to do its work without degrading security or privacy for the rest of us.

@mattblaze

So you want law enforcement to not report security-holes in software, because they will need them to stay open for "lawful hacking" purposes ?

That doesn't sound particular workable to me... ?

@bsdphk @mattblaze In fact, Matt and I and our co-authors said the exact opposite of your claim; see Section VI of https://scholarlycommons.law.northwestern.edu/cgi/viewcontent.cgi?article=1209&context=njtip. From ¶162: ‘Any policy short of full and immediate reporting is simply inadequate. “Report immediately” is the policy that any crime-prevention agency should have, even though such an approach will occasionally hamper an investigation.’

@SteveBellovin @mattblaze

Yeah, that's what I think too.

But Matt just said that court orders would have to be satisfied by "lawful hacking", so how does that work, if there are no vulnerabilities to exploit ?

To me it sounds like having your cake and eating it too:

You want perfect encryption and perfect software, and then police must rely on "lawful hacking" to satisfy a court-order for wiretapping.

What precisely is "lawful hacking" then ?

@bsdphk @SteveBellovin If only we had written an entire paper about this, and if only Steve had included a link to it.

But I understand if you'd rather just yell at people on the Internet.

@mattblaze @SteveBellovin

I've read your paper, I dont recall you answering the question I asked anywhere in it ?

What have I overlooked ?

@bsdphk @SteveBellovin I don't believe that you actually have, frankly.