Stange (alien?) "Browsers"

help, what is this stuff?

[batavier]

Lately, Ive been visited by alien browsers,identified by seemingly random letters and numbers.

Some of the latest - all today:

"vutFwrlsf0foljtfyvFyujdjlfpmruv tu"
"mdmevuhnvvjdsoitgreethfteq"
"rs5BBltg5cvcBn5ukpub borut5qjduym"
"hdkdigsj obxpyevejHbuf1u"

Anybody has any ideas?

[gregbo]

If you can post more of the log entries generating this traffic, we might be able to be more helpful. As a general rule, the user agent field can be set to anything by someone who creates their own user agent or spoofs one by connecting to the HTTP port.