Bots can play havoc with your Google Analytics. If you have a new website and are working on building qualified traffic, a high bounce rate can be disturbing until you realize it bots visiting your site. Analytics is supposed to provide data-driven conclusions about where your website needs help, which is impossible with the noise from bots. Seeing a bounce rate of 80 percent on your home page may prompt you to change the content, however, your content may appeal to your real visitors.
You can exclude ISPs from your Google Analytics account by creating a new filter. This will help save you from unnecessary angst as you look at your referrals report. You'll see spammy looking websites that appear to link to your account, but they really do not link to your website. These fake referrals are there to trick you into visiting the website. If you were to visit one of these sites, you'll find a scam or malware.
Because of the unsavory sounding names of some of the referring websites, people may assume that a competitor is using negative SEO tactics. If that was the case, and a competitor was creating backlinks from irrelevant websites, you would not be getting any traffic from the backlink. You can disavow any spammy backlink from a competitor, which is why it is important to check your backlink profile regularly.
It's not only competitors that can attempt to ruin your rankings with SEO. Anyone with knowledge of SEO can pay $10 and buy links. Google will shut the link-selling site down soon and you'll be left as an alleged buyer of backlinks. Another tactic is from black hat SEO companies that want their client to do better than the client's competitors. The SEO company will link get your site bad backlinks, allowing their client's site to rank better in the SERPs temporarily, at least until the SEO firm collects their fee and you notice what is happening. For more information click here https://www.reddit.com/r/SEO/comments/8l4ecj/gettinghitbymyfirstnegativeseoattackwhat/.