Filters in reports. For example, you can open Traffic sources"

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All traffic" → "Transitions" , then click on the " More... " link and enable filtering. For example, set the " Average session duration " indicator higher than 10 seconds - most likely, spam traffic will be excluded. You can also exclude a list of unnecessary domains using regular expressions, for example, " sveta\.online|addcatalogs\.manyweb\.ru " (the dot must be escaped with a slash, and the domains must be separated by a vertical bar, which denotes the logical operator "OR"). And for permanent use, create a corresponding segment.
Filters in the view. To do this, open " Administrator" → "View settings" → "Filters ", select the " Custom " type, exclude the field ("Campaign source", "Transition" or "Host name" ) - and specify the required regular expression there. If you are afraid of accidentally removing useful traffic, you can create a separate view for these purposes. However, this method will only filter future data - nothing will change in the historical data.
Pass a special token via custom parameters and include only the relevant sessions . To do this, you need to create a custom parameter in GA, set it in the counter code (directly or via Google Tag Manager), el-salvador mobile phone numbers database create a copy of the view and use a filter to include visits only with the specified parameter (detailed instructions are in Alexey Yaroshenko's blog ).
In the same “View Settings” it wouldn’t hurt to check the box “Exclude requests from robots and spiders”
In the same “View Settings” it wouldn’t hurt to check the box “Exclude requests from robots and spiders”

Read also: High traffic ≠ many conversions and leads: how to analyze the quality of traffic to a site

Universal life tips that will come in handy in any similar situations
Do not follow suspicious links. At best, they are placed simply for the sake of non-targeted traffic. At worst, to launch a virus, steal passwords, obtain personal data, etc.
Do not open emails/do not accept meetings from unknown senders.
Do not hope that some people are ready - just like that or very easily - to give away winnings, provide high returns, etc.
Use antivirus software.
This doesn't always work.