That's not enough. This unknown, anonymous outfit wants you to trust them to collect info about security vulnerabilities on your site. That's asking a lot.

Remember, in B2B you're selling to the main in the chair[1]:

    I don’t know who you are.
    I don’t know your company.
    I don’t know your company’s product.
    I don’t know what your company stands for.
    I don’t know your company’s customers.
    I don’t know your company’s record.
    I don’t know company’s reputation.
    Now—what was it you wanted to sell me?

Now see the modern version of this: [2]

[1] http://rhodescomm.com/_blog/Observations/post/Why_You_Should...

[2] https://www.youtube.com/watch?v=nXG7zYWKHGU