>otherwise stuff like this happens
Those are just leftover HTML pages from whenever the page index was massively increased (i.e. the last big attack) - kokonotsuba isn't aware of those pages, so u can safely baleet those manually

>We have better spam prevention tools now (thx 4 komeo), so board wipings shouldn't happen unless all janitors are offline for long enough.
We have an anti-flood limit of 10 secs b4 a new thread can be made, but if my math is correct (it rarely is - plz check it!), it would still only take 37.5 mins for someone to wipe 15 pages

Finding a point where all our staff-san are AFK/tabbed out for 40-ish mins is probably not too difficult to achieve