The majority of cyber attacks on an information system, whether personal or corporate, involve past attacks for which security updates have been issued. The truth is that zero-day attacks, which we cannot deal with most of the time, are quite rare. Of course, when we have a well-established system in terms of security, we should receive alerts if someone exploits a vulnerability in our system. Even Stuxnet , for example, perhaps the most sophisticated virus that has appeared, which combined 4 zero-day vulnerabilities, could have had a much smaller impact on the systems it affected if they implemented more effective security practices and policies.
The following video is based on this exact logic, which essentially analyzes 10 online attacks that could very well be avoided:
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