[2021] Riot Penrif on recent EU servers issues

Link to the Twitter post.

"Hey everyone, long time no tweet. I’m tech lead for League, and I’d like to shed a little light on League's instability in Europe of late. The outages have been caused by malicious internet traffic, colloquially known as a “goddamn DDoS.” It's worth clearing up that the issues affecting Clash over the weekend weren't due to anything with Clash, just the timing of the attack. We use non-standard communication protocols for some of our software while most of the anti-DDoS technology development has focused on HTTP because the interwebs mostly is just webs. That means that we can't always just reach for The Thing Everyone Does When DDoSed. As can be seen, mitigating this new type of DDoS attack is a work in progress. A lot of network folks have been heads down figuring out how to filter out this traffic since the events over the weekend. It's hard work, and I thank them profusely for it I do wish I could tell you more specific details, but security stuff like anti-DDoS does require secrecy. Getting anywhere near the nerdy details with y'all would arm the attackers with more useful information, and that's not worth the fun we'd have Any case, I wanted to get what we could safely disclose about it out to y'all - it's important to us that you know we care about service stability and work hard to keep it as high as we can. We know that explaining the outage doesn't make up for it, and it's on us to make them as rare as possible."