Viruses on the site are not uncommon. Often, the owner does not even suspect that there are malicious programs on his resource that infect users. To avoid this situation, you need to constantly check the site for viruses.
First of all, try to access your site from various search engines. Robots have long learned to find dangerous content and warn users. Most often, such information is shown under the link and is colored red. In addition, search engines can independently notify you about detected viruses by sending a report to the webmaster's panel.
Antivirus
The easiest way to find viruses is with an antivirus. There are special services that can check your site for malware and code for free. For example, Dr. WEB anti-virus has placed a special section on its resource. In addition, there are services that check the resource at once using a variety of antiviruses, but they are usually paid.
You can check the site yourself. Go to hosting and download your resource data. Then run your home antivirus and choose full scan. In addition to applications, good programs also analyze the code of pages and compare them with their database. If you need to check someone else's resource, just provide a link to it.
Many hosting providers offer automatic website checking services. This is often a paid service, but it is really useful. In this case, you do not have to worry about the safety of the resource. And if you have any problems, you can just contact technical support and ask to fix the situation.
Other methods
Often other users can notify you about the presence of viruses. For example, by leaving a review in the comments. If your resource has a lot of regular visitors, then the malicious code or program is unlikely to go unnoticed. If you are looking for information about an outside site, then read the reviews on the Internet.
You can install a special script in the root folder of the site that will analyze file changes and, in case of suspicion, notify you by mail. There are quite a few such scripts. You can find the right one for your CMS on the Internet.
The Google search engine has a special service designed just to fight viruses. It's called Safe Browsing. With the help of this service, any user can find out whether a resource is on the list of suspicious, which pages are infected, whether the site is an intermediate link in the spread of viruses or is itself a carrier.
