How often do people scrape data from other websites for their own use?
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Hi, I'm considering scraping data from a directory to use for my own website. I know some people outsource this process to some random Indian consultancies, but if I decide to do it myself in the states, I was wondering: Will it show up as a security breach/flags/warning that is going to trace back to my IP? What are the actions that a webmaster will typically take to combat a data scrubber once they recognize this security breach? What methods do people usually use to avoid security breach liabilities?
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Answer:
To answer the main question: very often. People are interested in web data for every imaginable reason and more. To answer your sub-questions: It depends on how aggressive you're crawling to trip any security alarms. Your IP will show up in the logs. It's simply a matter of how often it appears relative to other IP addresses and whether or not it gets noticed by the server's systems or the webmaster. Different websites have different ways of tracking crawling behavior. In general, crawling over 1 request/second from a single IP address will get you noticed. Most likely they will block your IP address. Most websites have no teeth to go after you legally (I assume this is what you mean when you say "liability".) This is because it's not worth it for most sites to link your IP to you the individual, and blocking your IP address is a very easy to solution. Hope this helps!
Shion Deysarkar at Quora Visit the source
Other answers
To address #3, the most common method I know of to avoid being tracked by your IP address is to scrape through a proxy service, such as http://proxymesh.com. But if you're being a good netizen and your crawler is following robots.txt, then if the site adds your user-agent to their robots.txt, you should probably stop scraping them. Also, it's not really a security breach, but it can be a drain on server resources, which makes sysadmins angry.
Jacob Perkins
People often scrape data from other websites for their own use. Scraping data is not an easy task, and you will require experts that can help you out. That is why there are many tools to do this. I would advise you to have a chat with the expert staff of ShoppingCartElit, as they will be able to guide you the right way of scraping data. EasyDataFeed is one of the company`s products, which can grab data from different types of websites and represent it in the forms of tables and sheets. However, I really think they are one of the best platforms and definitely suited for what youâre looking for. Disclosure: I wrote the post.
Sam Lis
As frequently as every second of the day. Search engine spiders like Google, Baidu, and others are constantly scraping and crawling sites for the companies' own use. To your #s: 1) If you obey robots.txt there is no 'security breach' unless you use an account or login to access protected data. (Even if you disobey robots.txt there may not be any security breach, depending on what you're doing.) 2) Possibly add a robots.txt rule. Maybe block your IP... but the latter is unlikely unless you're abusing their system. Probably the worst case scenario is stopping you by threat of being able to out-spend you in civil court. 3) There's really nothing to avoid as long as you're not stealing protected data. It's not even established if ignoring robots.txt is considered trespass for unprotected (publicly available) information. The main thing is to not be a burden on the site you're scraping, because there's also no law that says they can't block you. If the company offers an API, use it where possible. Don't hammer their server with a ton of parallel requests. Don't publish their data as your own. Basically keep the site owner's process to block you more of an inconvenience than allowing you access.
Pat Roberts
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