It appears that Israel has launched a massive cyber attack that has injured thousands of Lebanese, and the Iranian ambassador, killing 11, injuring 4,000 and leaving 400 in a critical condition, figures which will no doubt go up (or down depending on the source): https://www.palestinechronicle.com/cyber-attack-israel-blamed-as-hundreds-are-injured-in-device-explosions-in-lebanon/.
The mechanism seems to be hacking affecting the thermal regulation of pagers, that had recently been purchased by Hezbollah, as they feared their mobile phones could be hacked, causing them to over-heat and explode. Another theory holds that the pagers had had the explosive PETN added to them in manufacture by Mossad. In any case this will ensure that the Middle East war goes full power now, with the wild card being Iranian involvement: https://jakartaglobe.id/news/mass-pager-explosions-in-lebanon-hezbollah-suspects-israeli-cyber-attack. But we knew that would occur.
The astonishing thing here is the way that the technology which people carry in their pockets can be turned into weapons of mass destruction, assuming that the explosives were not added, and it was just exploding pagers. It is highly likely that in the coming wars with Russia and China that some sort of attack like this, maybe involving laptop computers, but many times more serious, will be launched, just to cause chaos on the home front as a prelude to a major kinetic event: https://www.youtube.com/watch?v=ZCvWucOwPAQ.