"Elf Arrow" is a perfect name for an IT security company with the stated qualities, and works on several levels:
"Elf Arrow" is a play on the Spanish words "El Faro" meaning "the lighthouse" - a metaphor for a trusted and reliable guiding light built on solid foundations.
"Elf Arrow" is also the name that rural people of Britain give to the flint neolithic arrowheads often found in the fields, due to a once widely held belief that they were the handiwork of fairies. Despite being little more than chipped pieces of silica, "elf arrows" were believed to magically shield and protect anyone lucky enough to find one.
An "elf arrow" in this sense is therefore not just a very traditional symbol of security, it shares a common feature with a modern IT security company - they both allow people to stay secure with the aid of powerful little silicon chips!
Even without its very apt origins, the "Elf Arrow" name instantly generates an image that resonates with the stand-out characteristics of the company - guiding, aligning and focusing on targets. It also implies elegance, strength and directness of purpose.
"Elf Arrow" is a name that will easily inspire future corporate branding decisions. It is short enough to display fully on a simple logo, e.g. with a stylised arrow. As fantasy is a popular subject matter among graphic artists, any original themed corporate artwork you commission in the future should be of a high quality and have competitive pricing.
"Elf Arrow" as a Google search at the moment produces mostly miscellany - certainly nothing that would be difficult to outrank.
There are no listings in the US trademarks database for "elf arrow" or "elfarrow".
www.elfarrow.com does not exist, and its only plausible homonym site, www.elfaro.com, appears to be for sale for a nominal amount if you felt its existence was a sufficient concern.
Thanks for letting me pitch