You can start a forest fire if said forest is used for cover or concealment by enemy military forces. All feasible precautions must be taken to limit the damage to military targets only.

It’s not against the Geneva convention, it’s completely within the limits to use incendiary weapons against military targets. Read for yourself:

https://geneva-s3.unoda.org/static-unoda-site/pages/templates/the-convention-on-certain-conventional-weapons/PROTOCOL%2BIII.pdf

It’s not an incendiary round though, it’s an incendiary weapon. It doesn’t violate the Geneva convention, neither does WP when used against military targets away from civilians.

I use Signal as well and that’s what came to mind. Let’s assume I cheated on my wife and hired prostitutes using Signal on my phone. She could use my Windows PC, open Signal there, then see the cheater texts. This isn’t the fault of Signal, Apple, or Microsoft. It did the thing I asked it to do - sync messages. I would have fucked up by letting someone use my Windows login.

Good thing we don’t share accounts, aside from some very short term usage. That’s just a bad idea, even if it’s little personalization type things. Not messaging hookers probably goes a long way too.

All he had to do was put his wife on a different account on the Mac or use another messenger on his phone. I don’t see iMessage as being “leaky” in this instance. His messages didn’t appear anywhere they weren’t supposed to from a technical perspective. He used the same account on the Mac and iPhone, syncing messages worked as advertised. I’d expect this to happen with any message sync feature, it’s not iMessage specific.

It’s like complaining that your wife found out your were cheating because you used FB messenger, yet didn’t create a separate login for your wife on your Linux desktop, and the sole account’s web browser is logged in to your Facebook. He fucked up, that’s poor computer security to let someone else use your account. A major Mac feature is a lot of activity is easily shared across devices you’re logged into. Photos, messages, calendar, reminders, all sorts of things. This tells me to be careful where I log in with my iCloud account and who uses it. Why would you not have a separate login for your wife, especially if you’re fucking around on her and she regularly uses that computer?