I climbed about 15 minutes ago in a wonderful catalog of Yandex. And that's what I found:

Links lead to completely left sites!
')
In particular, when clicking on Lebedev’s studio, the site opens at all on the wrong site -
www.opasnosti.net
A lot of such misunderstandings in the site creation site
yaca.yandex.ru/yca/cat/Computers/Internet/Web_DevelopmentThere were also inconsistencies in other categories, in particular about engineering systems.
What is it? Hacking or glitch?
At the time of writing, nothing has changed yet.
UPD: 17:15 Yandex. The catalog works fine. Discrepancies are not observed. I wonder if there will be any official information from Yandex about this incident?
UPD: 17:19
yaca.yandex.ru/yca/cy/ch/habrahabr.ru Habr still leads to the site of mayonnaise, so it's early to say something.
UPD: At 18:00 the catalog is working fine. Everything is fixed