The site ahrefs.com can purportedly tell any site owner, for prices starting from 99$ / month, who links to them from where, and also provide site owners with other seemingly significant and meaningful data about visitor activity.
The problem is, they use software bots to crawl sites, and THOSE BOTS CLICK ON LINKS in your site, if you have outgoing links, probably to verify if the outgoing links have real destinations or are just linkbaits. For a regular site, WITHOUT AFFILIATE connections, this probably won’t hurt anyone, but in the case of affiliate sites, regardless of affiliate programs, it’s a disaster.
Sometimes it’s good to have a quick .htaccess rules writer for your server / host, to block a larger number of IP addresses from accessing stuff on your site, like spambots, or people (bored kids ?) who try to hack into your site or blog. If you use any kind of statistics plugin on your wordpress blog, or any other stats on other platforms, you can most likely see the IP addresses and the paths these visitors have taken, trying to access your site in an unauthorised way, like trying to exploit a revolution slider vulnerability to show your config.php, or some other plugin.
So here’s the quickest way to deal with these IP addresses, presuming you are on a linux box with PHP installed, or on any computer with PHP available in command line (php5-cli package on debian/ubuntu/mint/fedora/q4os , basically, on most modern linux systems, and xampp or wampp package on windows based machines).
TL:DR version: some examples of how some lifewaster hacker-wannabes try to gain unauthorised access to sites and blogs and how you can simply and effectively block them
Obviously, some people have too much time on their hands, and don’t appreciate life enough in order to do something useful with theirs, so they spend hours and days trying to hack into other people’s servers, websites, and webapps. How do I know this ? Well, this year only, I’ve found and filtered out over 300 IP addresses and user agents, behavioral patterns and 404s (not found messages) in the logs of THIS SITE ALONE (I manage several sites and blogs, both for myself and coworkers and some companies, all on different servers), that have all indicated that some idiots spend hours a day trying to hack into wordpress, joomla, and other CMS (content-management system) based sites.
Some of the IP addresses clearly indicate that they do have some serious resources at their disposal, like hacking attacks coming from datashack.net, a company or hosting service with several thousands of IP addresses, or ovh.net, again, with several hundreds of IPs at their disposal. Some of the log entries (see some examples below) clearly indicate that they either have no clue how a webserver actually operates, or they base their attacks on outdated information from 10 years ago, when hacking into a server was possible simply by knowing what components the CMS has and looking for ones that can be exploited via SQL injections or concurrent command executions.
Obviously, almost all major CMS engines are constantly being improved, and security flaws are consistently being patched by all well-known platforms, however, it looks like some of these life-wasters and hacker wannabes haven’t found out about that and try EVERY DAY the same tactict, the same M.O (modus operandi), on THE SAME SITE, in some cases from the same IP address. Now if that is not a good example of insanity, I don’t know what is 🙂