Twitter is under attack (noticed this when none of my tweets have shown up the last 24 hours)

Ongoing denial-of-service attack 14 hours ago

We are defending against a denial-of-service attack, and will update status again shortly.

Update: the site is back up, but we are continuing to defend against and recover from this attack.

Update (9:46a): As we recover, users will experience some longer load times and slowness. This includes timeouts to API clients. We’re working to get back to 100% as quickly as we can.

Update (4:14p): Site latency has continued to improve, however some web requests continue to fail. This means that some people may be unable to post or follow from the website.

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Site is down 15 hours ago

We are determining the cause and will provide an update shortly.

Update: we are defending against a denial-of-service attack.