You can use Signal with a different client.
Can you advise, which one would be a good one? Because I actually use Signal too, it’s just misbehaving a lot recently.
I have had endless difficulties with Signal forcing upgrades on me and requiring to sign in on the phone, under threat of deactivating my account (I use it on a PC).
Commentary:
You’re linking to the Times of Israel. Since the news outlet operates in Israel, it is subject to censorship by the IDF, and they have chosen to use their power to censor the article and omit weapon types.
If you want information about assassinations of Iranian nuclear scientists, get their list from Wikipedia and google each of their names, looking for descriptions.
https://en.wikipedia.org/wiki/Assassinations_of_Iranian_nuclear_scientists
My guess: guided missile or drone strikes. All the assassinations happened at a time of Israeli air strikes over Iran. Whatever weapon was used, was deployed from airplanes. Given the high profile of the targets, Israeli intelligence agencies did their job this time (in Gaza, they seem to be feeding their troops low quality AI slop).
I will use the opportunity to remind that Signal is operated by a non-profit in the jurisdiction called “the US”. This could have implications.
A somewhat more anarchist option might be TOX. There is no single client, TOX is a protocol, you can choose from half a dozen clients. I personally use qTox.
Upside: no phone number required. No questions asked.
Downside: no servers to store and forward messages. You can talk if both parties are online.
They’re probably not joking, TOX IDs are like that. :) Mine is:
CA9A4C1968AA38CC93CB32F31F3682AB897ABA42C90E6F0EA5E1FB541930FD64138B4CC09AD*
(*the number opposite to the first is the number that comes after one, to hinder any spam bots)