Found this nocliping around in the map “Forget about Freeman!” Right after you fight a tank and a whole bunch of marines.
I’m not very informed on binary and was wondering if this could translate into something?
And sorry if this has already been found. 
Looks fishy to me.
Ran it through a binary-to-ASCII converter for fun.
Apparently, the binary reads as the following 3 messages in ASCII:
lol
JENN0_BING
lol
^ lol
Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.
