IRS (iou) and op(3) (iou)

IRS (iou)

IRS abbreviation.US.
Internal Revenue Service.

op(3) (iou)

op noun2. colloq. E20.
[Abbreviation of OPERATION.]
A surgical operation. E20.
A military operation. E20.

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About

Psycheclone is a web bot
It comes from several IP addresses:
208.66.195.2
208.66.195.8
208.66.195.7
208.66.195.5
208.66.195.3
208.66.195.9
208.66.195.10
208.66.195.11
208.66.195.4
208.66.194.179

Based on records from ARIN reveals that this web bot is owned by a company called Digital Infinity Ltd located in Moscow, Russia.
To block all of those bots
Add this to your .htaccess file

SetEnvIfNoCase User-Agent "psycheclone" bad_bot Deny from env=bad_bot

or

<Limit GET POST>
order allow,deny
allow from all
deny from 208.66.195.0/28
</Limit>

Psyche Clone