Apparently was not related to a cyber attack, as stated in status page (https://status.proton.me/)

We have resolved all service outages, and the situation has been stable for some time. We have identified the root cause of the problem, implemented a fix, and are now monitoring the results. Jan 09, 2025 - 19:27 CET

Original research: https://www.jamf.com/blog/tcc-bypass-steals-data-from-icloud/

Welcome! I dont know you background, but I would suggest get into selfhosting. There are several projects related to cybersecurity, fun and useful. Ex: MISP, Pihole, The Hive.

Nevertheless: https://www.crowdstrike.com/en-us/blog/crowdstrike-fortinet-partnership-unifies-endpoint-firewall-protection/

Update: Israel Planted Explosives in Pagers Sold to Hezbollah, Officials Say (https://www.nytimes.com/2024/09/17/world/middleeast/israel-hezbollah-pagers-explosives.html)