Attacks might continue, but are being mitigated and the service is restored for all users. We've also made some hardware changes in our datacenter to improve resiliency.
We are constantly updating the first comment of the discussion found on our Reddit page here: https://www.reddit.com/r/ProtonMail/comments/8uu9t7/update_regarding_the_ddos_situation/
New attack has started and we are working on mitigation.
The Proton network is under DDoS attack. We are working with upstream providers to mitigate the attack.
Discussion can be found at our Reddit here:
There are ongoing attacks and issues with our network which may lead to intermittent connectivity problems.