"Close the shutters and bar the doors,
They have their own and they want what's yours ;-)"*
Seriously though ( and I says this as someone who reads the spiders and the robots and the apache threads here whenever there is a post ) How many times have you been actually scraped since you began ..and how many times actually been hacked , or had real determined attempts made ? to be saying that scraping and hacking are "on the rise".
Most of us see no more scraper ( or attempted scraper activity ) than we ever did ..and no more hack attempts than there ever were either..
Jumping at shadows or thinking everyone is after your goodies or waiting to write pwned on your front page or serve malware from your contact page is going to wear anyone out ..take precautions ..but don't panic or lose any sleep ..
No-one runs million machine botnets at a single site ..and certainly not to scrape it ..bigs nets are used to send spam, or phish ..much smaller nets of a few thousand ( or tens of thousands at most ) are used to DDOS and disrupt ..and their targets are the big dogs MS , Banks, or government sites ..not small sites.
Scrapers can get an unprotected site with just one program and rotate through proxies for each directory jump ..only needs one person and some "off the shelf" scraper app to do that ( there are even freeware ones )..doesn't need the Russian Mafia ( who have more lucrative things to do anyway ;-) best protection is to white list the good bots ( those that you want ) ..kick all others to the kerb ..and from time to time revise the lists ..
But if you worry all the time about who might be visiting and what their hidden "evil intent" is ..it's like letting your Grandchildren's friends visit with them ..but following them around all the time with a can of mace in your hand in case they steal the spoons or try to molest you..or eat the cat :-)
Worrying, and treating all with suspicion, spoils the experience of having a website(s) and having it visited ( unless it stores masses of personal data and or credit card details or state secrets ) it won't be on the "we got to hack and scrape this list" that Igor and Manuel exchange notes upon, when they aren't counting the profits from their arms , drugs and people trafficking business that is ..IMHO ;-)
*doggerel mine ..made up on the spot ..;-)