Do you know bot LTX71? What is it doing? Is it spam?
<p>There is a bot/spider crawling my websites very fast. The useragent is 'ltx71 - (<a href="http://ltx71.com/" rel="noreferrer">http://ltx71.com/</a>)' and it has serval ips:</p>

<p>52.3.127.144 and 
52.3.105.23</p>

<p>On the website it says just this:</p>

<blockquote>
  <p>LTX71</p>
  
  <p>We continuously scan the internet for security research purposes. Our
  crawling is not malicious and only notes summary information for a
  page.</p>
  
  <p>If you have further questions please contact research@ltx71.com</p>
</blockquote>

<p>I'm wondering what research purposes. I cannot find anything about it on Google. Should i block this bot? </p>