What changed
The update itself is well documented. Per timeline data pulled from Google's own Search Status Dashboard, it ran from 18 to 21 August — about 2 days 16 hours — making it the longest of the three named spam updates Google has run in 2026, ahead of March's 19.5 hours and June's 49 hours. Google characterized it as "a normal spam update" applying globally, not specifically targeting link spam or site-reputation abuse but broader content-spam enforcement under existing policy. That part is settled and confirmed.
What's not settled is what's happening after it. Search Engine Roundtable's report → pulls data from AccuRanker, Mozcast, Semrush Sensor, Sistrix and nine other trackers, all pointing the same direction: rankings are still moving well after the update should have settled. No Google spokesperson has commented on why.
What this means if your rankings moved this week
Worth saying plainly: a ranking swing right now doesn't automatically mean you did something wrong, and it doesn't automatically mean you're safe either. With no confirmed second update and no Google explanation, the honest read is that this is unusually persistent post-update noise — not a signal to overhaul anything on a hunch.
The useful move is the boring one: check whether the swing is site-wide or isolated to specific pages, compare against the pattern other sites in your space are reporting, and hold off on reactive changes until the picture is clearer. If you want a second pair of eyes on what actually moved and why, that's exactly the kind of read our SEO services team does before recommending any change.