There is a new agressive bot from Singapore, which does not have a specific name (so I'm not sure what it is), that identifies more or less like a web browser but fortunately it uses version numbers that seem rather unique to bots, avoiding to block real users (I hope).

It was added to the bots list, so when the bot filter is enabled that one is blocked too (and the rest of the time it is slowed down like other bots).

It was also the culprit of the issues that sometimes occurred on the image server (comment pictures), as it was browsing too aggressively the forum of my site. It is now banned from there, hoping its identified won't change to go around that.

They use various IP for their requests, so if I want to block it by IP I would have to block a whole range of Singaporean IPs.