Question

I have a website, today looking at the log, I found some request to a page from my server with appended this variable &sa=U&ei.

Could you tell me guys what &sa=U&e could mean? Could be an attempt to find Nullable Scrips? Could be a security threat?

&sa=U&ei=XuRBT92UFseYhQf_w7HeBQ&ved=0CNYBEBYwYw&sig2=Rt1Cr_FCPD1-6VYu__Oavg&usg=AFQjCNFlHVaDQL--kgDbOn2vNgUqwUOsTA

The error in my log is:

A potentially dangerous Request.Path value was detected from the client (&)

Answer 1

http://www.bleepingcomputer.com/forums/topic442637.html

But nevermind. I found the offending culprit. Seems that for some
reason my “GoogleEnhancer” became “incompatible” with Firefox. It
worked fine even before I updated to 10, but go figure. And it wasn’t
the whole add-on, it was the “Use Google Classic” radio button turned
on. I got this add-on after Google started making their search engine
so… oh, what’s the word I’m looking for… umm… oh, yeah…
crappy!

http://www.ausforces.com/showthread.php?6595-Google-is-acting-odd…

I figured out what it is… I have an add-on called google enhancer
which obviously hasn’t been updated properly of late. Disabled it and
it worked fine. Well that was a waste of a thread. Thanks for the help
though guys.

So, the unnecessary part of the request is created by an outdated add-on for Firefox, nothing serious. The visitors with that add-on have more problems than your website 🙂